INVESTIGATION OF CORRUPTION CASES
Tony Kwok Man-wai *I. INTRODUCTION
The Hong Kong Independent Commission Against Corruption (ICAC) is popularly regarded as a
successful model in fighting corruption, turning a very corrupt city under colonial government into one of
the relatively corruption free places in the world. One of the success factors is its three-pronged strategy fighting corruption through deterrence, prevention and education. All three are important but in my view,
deterrence is the most important. That is the reason why the ICAC devotes over 70% of its resources
to its Operations Department, which is responsible for investigating corruption. Nearly all of the major
corruption cases I have dealt with were committed by people in high authority. For them, they have certainly
been educated about the evil of corruption and they may also be subject to certain degree of corruption
prevention control. But what inspired them to commit corruption? The answer is simply greed, as theywould weigh the benefits they could get from corruption against the chance of them being discovered. Ifthey think that it is a low-risk, high-return opportunity, they will likely succumb to the temptation. So how
can we deter them from being corrupt? The only way is to make them realize that there is a high risk ofthem being caught. Hence the mission of the ICAC Operations Department is to make corruption a high-risk
crime. To do that, you need a professional and dedicated investigative force.

II. DIFFICULTIES OF INVESTIGATING CORRUPTION
Corruption is regarded as one of the most difficult crimes to investigate. There is often no scene of thecrime, no fingerprint, no eye-witness to follow up. It is by nature a very secretive crime and can involve justtwo satisfied parties, so there is no incentive to divulge the truth. Even if there are witnesses, they are often
parties to the corruption themselves, hence tainted with doubtful credibility when they become prosecution
witnesses in court. The offenders can be equally as professional as the investigators and know how to cover
their trails. The offenders can also be very powerful and ruthless in enforcing a code of silence amongst
related persons through intimidation and violence to abort any investigation. In this modern age, thesophisticated corrupt offenders will take full advantage of the loopholes in cross-jurisdictions and acquire theassistance of other professionals, such as lawyers, accountants and computer experts in their clandestine
operations and to help them launder their corrupt proceeds.

III. CORRUPTION AND ORGANIZED CRIME
Corruption rarely exists alone. It is often a tool to facilitate organized crime. Over the years, ICAC
have investigated a wide range of organized crimes facilitated by corruption. Law enforcement officers
have been arrested and convicted for corruptly assisting drug traffickers and smugglers of various kinds;bank managers for covering up money laundering for organized crime syndicates; hotel and retail staff for
perpetuating credit card fraud. In these cases, we need to investigate not only corruption, but some very
sophisticated organized crime syndicates as well.

IV. PREREQUISITES FOR AN EFFECTIVE INVESTIGATION
Hence, there is an essential need for professionalism in corruption investigation. There are several
prerequisites to an effective corruption investigation.
* Adjunct Professor & Honorary Course Director, Corruption Studies Programme, Hong Kong University SPACE and Former
Deputy Commissioner & Head of Operations, ICAC, Hong Kong.

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A. Independence
Corruption investigation can be politically sensitive and embarrassing to the government. The
investigation can only be effective if it is truly independent and free from undue interference. This depends
very much on whether there is top political will to fight corruption in the country, and whether the head of
the anti-corruption agency has the moral courage to stand against any interference.
B. Adequate Investigative Power
Because corruption is so difficult to investigate, you need adequate investigative power. The HK ICAC
enjoys wide investigative power. Apart from the normal police power of search, arrest and detention, it
has power to check bank accounts, intercept telephone communications, require suspects to declare theirassets, require witnesses to answer questions under oath, restrain properties suspected to be derived from
corruption, and hold the suspects’ travel documents to prevent them from fleeing the jurisdiction. Not onlyis the ICAC empowered to investigate corruption offences, both in the government and private sector,
they can investigate all crimes which are connected with corruption. I must hasten to add that there is anelaborate check and balance system to prevent abuse of such wide power.
C. Adequate Resources
Investigating corruption can be very time-consuming and resource intensive, particularly if the cases
involve cross-jurisdiction. In 2007, the HK ICAC’s annual budget amounted to US$90M, about US$15 per
capita. You may wish to multiply this figure with your own country’s population and work out the anticorruption budget that needs to be given to the equivalent of ours! However, looking at our budget fromanother angle - it represents only 0.3% of our entire government budget or 0.05% of our Gross Domestic
Product (GDP). I think you will agree that such a small “premium” is a most worthwhile investment for aclean society.
D. Confidentiality
It is crucial that all corruption investigation should be conducted covertly and confidentially, at least
before arrest action is ready, so as to reduce the opportunities for compromise or interference. On theother hand, many targets under investigation may prove to be innocent and it is only fair to preserve
their reputation before there is clear evidence of their corrupt deeds. Hence in Hong Kong, we have a law
prohibiting anyone, including the media, from disclosing any details of an ICAC investigation until overt
action such as arrests and searches have been taken. The media once described this as a “press gag law” butthey now come to accept it as a right balance between press freedom and effective law enforcement.
E. International Mutual Assistance
Many corruption cases are now cross-jurisdictional and it is important that you can obtain international
assistance in the areas such as locating witnesses and suspects; money trails, surveillance, exchange ofintelligence, arrest, search and extradition, and even joint investigation and operation.
F. Professionalism
All the investigators must be properly trained and professional in their investigation. The HK ICAC
strives to be one of the most professional law enforcement agencies in the world. ICAC is one of the firstagencies in the world to introduce the interview of all suspects under video, because professional interview
technique and the need to protect the integrity of the interview evidence are crucial in any successful
corruption prosecution. The investigators must be persons of high integrity. They must adhere strictly tothe rule of confidentiality, act fairly and justly in the discharge of their duties, respect the rights of others,
including the suspects, and should never abuse their power. As corruption is so difficult to investigate, theyneed to be vigilant, innovative and be prepared to spend long hours to complete their investigation. The
ICAC officers are often proud of their sense of mission and this is the single most important ingredient of
success of the ICAC.
G. An Effective Complaint System
No anti-corruption agency is in a position to discover all corrupt dealings by itself. They rely heavily onan effective complaint system. The system must be able to encourage quality complaints from members of
the public or institutions, and at the same time, deter frivolous or malicious complaints. It should provide
assurance to the complainants of the confidentiality of their reports and if necessary, offer them protection.
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report corruption. A 24 hour reporting hotline should be established and there should be a quick response
system to deal with any complaints that require prompt action. All complaints, as long as there is substancein them, should be investigated, irrespective of how minor is the corruption allegation. What appears to beminor in the eyes of the authority may be very serious in the eyes of the general public!

H. Understanding the Process of Corruption
It should be helpful to the investigators to understand the normal process of corruption, and throughwhich the investigators would be able to know where to obtain evidence to prove the corrupt act. Generally,a corrupt transaction may include the following steps:
1. Softening-up Process
It is quite unlikely that a government servant would be corrupt from his or her first day in office. It isalso unlikely that any potential bribe-offerer would approach any government servant to offer a bribe withoutbuilding up a good relationship with him or her first. Thus there is always a “softening up process” when thebribe-offerer builds up a social relationship with the government servant, for example, inviting him or her
to dinner and karaoke, etc. Thus the investigator should also attempt to discover evidence to prove that the
government servant had accepted entertainment prior to the actual corrupt transaction.
2. Soliciting/Offering of Bribe
When the time is ripe, the bribe-offerer would propose to seek favour from the government servant andin return offer a bribe to him or her. The investigator should attempt to prove when and where this hadtaken place.
3. Source of Bribe
When there is agreement for the bribe, the bribe-offerer would have to withdraw money for the payment.
The investigator should attempt to locate the source of the funds and whether there was any third person
who assisted in handling the bribe payment.
4. Payment of Bribe
The bribe would then be paid. The investigator should attempt to find out where, when and how thepayment was effected.
5. Disposal of Bribe
On receipt of the bribe, the receiver would have to dispose the cash. The investigator should try to locate
how the bribe was disposed, either by spending or depositing into a bank.
6. Abuse of PowerTo prove a corruption offence, you need to prove the corrupt act or the abuse of position in return forthe bribe. The investigator needs to identify the documents or other means proving his or her abuse of
authority.
The task of the investigator is to collect sufficient evidence to prove the above process. He or she needs
to prove “when”, “where”, “who”, “what”, “how” and “why” on every incidence, if possible.
However this should not be the end of the investigation. It is rare that corruption is a single event. A
corrupt government servant would likely take bribes on more than one occasion. A bribe-offerer would likely
offer bribes on more than one occasion and to more than one corrupt official. Hence it is important that theinvestigator should seek to look into the bottom of the case, to unearth all the corrupt offenders connectedwith the case.

V. METHODS OF INVESTIGATING CORRUPTION
Investigating corruption can broadly be divided into two categories:
A. Investigating past corruption offences;
B. Investigating current corruption offences.

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A. Investigating Past Offences
The investigation normally commences with a report of corruption and the normal criminal investigation
technique should apply. Much will depend on the information provided by the informant and from there, thecase should be developed to obtain direct, corroborative and circumstantial evidence. The success of suchinvestigation relies on the meticulous approach taken by the investigators to ensure that no stone is left
unturned. Areas of investigation can include detailed checking of the related bank accounts and company
ledgers, obtaining information from various witnesses and sources to corroborate any meetings or corrupt
transactions, etc. At the initial stage, the investigation should be covert and kept confidential. If there is noevidence discovered in this stage, the investigation should normally be curtailed and the suspects should
not be interviewed. This would protect the suspects, who are often public servants, from undue harassment.
When there is a reasonable suspicion or evidence discovered in the covert stage, the investigation canenter its overt stage. Action can then be taken to interview the suspects to seek their explanation and if
appropriate, the suspects’ homes and offices can be searched for further evidence. Normally, further followup investigation is necessary to check the suspects’ explanations or to go through the money trails as aresult of evidence found during searches. The investigation is usually time-consuming.
B. Investigating Current Corruption Offences
Such investigation will enable greater scope for ingenuity. Apart from the conventional methods
mentioned above, a proactive strategy should always be preferred, with a view to catching the corrupt redhanded. In appropriate cases, with proper authorities obtained, surveillance and telephone interception
can be mounted on the suspects and suspicious meetings monitored. A co-operative party can be deployed
to set up a meeting with a view to entrapping the suspects. Undercover operation can also be considered
to infiltrate a corruption syndicate. The pre-requisites to all these proactive investigation methods areprofessional training, adequate operational support and a comprehensive supervisory system to ensure thatthey are effective and in compliance with the rule of evidence.
As mentioned above, corruption is always linked and can be syndicated. Every effort should be exploredto ascertain if the individual offender is prepared to implicate other accomplices or the mastermind behindthe scheme. In Hong Kong, there is a judicial directive to allow a two thirds reduction of the sentence of
those corrupt offenders who are prepared to provide full information to ICAC and to give evidence against
the accomplices in court. The ICAC provides special facilities to enable such “resident informants” to bedetained in ICAC premises for the purpose of de-briefing and protection. This “resident informant” system
has proved to be very effective in dealing with syndicated or high-level corruption.

VI. INVESTIGATION TECHNIQUE
To be a competent corruption investigator, an official should know many investigation techniques andskills. The following are the essential ones:
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Ability to identify and trace persons, companies and properties;
Interview technique;
Document examination;
Financial investigation;
Conducting a search and arrest operations;Physical and technical surveillance;
Acting as undercover agent;
Handling informers;
Conducting an entrapment operation;
Witness protection.

I will try to cover the key investigation techniques.

A. Interview Technique
As corruption is a secret crime involving parties who are often sworn to a code of secrecy andsilence, a successful corruption investigator should always be a good interviewer, to break the code ofsilence. Interview technique always forms a very important part of the professional training of corruption
investigators. Interview techniques should include the following elements:

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Proper preparation and planning before the interview: the interviewer must study the casethoroughly: the background of the interviewee, the available evidence against him or her, the list ofquestion areas, etc. He or she should then formulate the structure of the interview.
Ability to deal with reluctant witness: it is fully understandable that the interviewees in corruption
cases are reluctant to come forward in the interview. The interviewer must have the ability toidentify the reasons behind the interviewee’s reluctance, whether it is due to his or her dislike of theagency, fear of intimidation, fear of going to court, his or her relations with the corrupt offenders, etc,
and to use the appropriate strategy to win his or her co-operation;
Ability to build rapport: by putting the interviewee at ease in a hospitable environment, giving him
or her reassurance, and handling him or her with patience and sympathy;
Need for active listening and to be flexible in the line of questioning, depending on what theinterviewee has said;
Maintain eye-contact and watch the body language, which often give you clue as to the truthfulnessof what the interviewee is saying. Always attempt to test the truth and to identify the motive of thestatements made by the interviewee;
If the interviewee is prepared to relate the full version, ensure that maximum details are obtained –when, where, who, what and how, in chronological sequence, and most important of all, who else isalso involved in the corruption;
Always retain control in the interview.

B. Professional Investigative Support
In order to ensure a high degree of professionalism, many of the investigation techniques can beundertaken by a dedicated unit, such as the following:
1. Intelligence Section
The intelligence section is a central point to collect, collate, analyse and disseminate all intelligence andinvestigation data, otherwise there may be major breakdown in communication and operations
2. Surveillance Section
The surveillance section is a very important source of evidence and intelligence. The Hong Kong
ICAC has a dedicated surveillance unit of over 120 surveillance agents and they have made a significant
contribution to the success of a number of major cases.
3. Technical Services Section
This section provides essential technical support to surveillance and operations.
4. Information Technology Section
Rapidly advancing telecommunications techniques have created a threat to corruption investigation.
Corrupt negotiation can be carried out without personal contact. It can be done through email, mobile phone,
fax, all without trace. Corrupt transactions via e-banking can, with a switch of button, transfer money tooverseas accounts. Paper documentation is often replaced by computer records protected by unbreakablepasswords. In extreme cases, professional hackers are employed to break into the computer systems of
the anti-corruption agencies to find out the progress of investigations. Counter-surveillance and counterinterception techniques are often engaged to neutralize the law enforcement effort.
However, modern information and telecommunications technology can be a great asset in corruption
investigation, such as:
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Telecommunications and other technical equipment used in surveillance;
Capability to intercept all types of telecommunication including mobile phones, Internet, fax, etc.;
Speaker identification techniques for production of intercepted evidence;
Mobile/Internet/ CCTV records;
Computer forensics;
Computer intelligence analysis techniques;
Major enquiry/operations computer systems.

5. Financial Investigation Section
Corruption investigations these days often involve sophisticated money trails of proceeds of corruption,

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which can go through a web of off-shore companies and bank accounts, funds, etc. It is necessary to employ
professionally qualified investigative accountants to assist in such investigation and in presenting such
evidence in an acceptable format in court.
6. Witness Protection Section
ICAC has experienced cases where crucial witnesses were compromised, one even murdered, before
giving evidence. There should be a comprehensive system to protect crucial witnesses, including 24 hour
armed protection, safe housing, new identity and overseas relocation. Some of these measures requirelegislative backing.

VII. CONCLUSION AND OBSERVATION
In conclusion, the success factors for an effective corruption investigation include:
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An effective complaint system to attract quality corruption reports;
An intelligence system to supplement the complaint system and to provide intelligence support toinvestigations;
Professional and dedicated investigators who need to be particularly effective in interviewing
techniques and financial investigation;
More use of proactive investigation methods, such as entrapment and undercover operations;
Ensure strict confidentiality of corruption investigation, with a good system of protection ofwhistleblowers and key witnesses;
International co-operation.

It is obvious that corruption and organized crime are getting more and more difficult to investigate. The
offenders have taken full advantage of the high technology and cross-jurisdiction loopholes. Conventional
investigation methods and current legal systems may not be adequate to win the battle against the corrupt.
We should adopt a more proactive approach in investigation, such as in the wider use of undercover
operations and the use of telephone interception, and to this end, we need to strike the right balance
between effective law enforcement and protection of human rights and privacy.

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