Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
List of Singapore police officers killed in the line of duty
Table title:
1990s
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Rank/no </th><th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Age </th><th colspan=1 rowspan=1 > Division/unit </th><th colspan=1 rowspan=1 > Circumstance </th></tr>
<tr> <td colspan=1 rowspan=1 > 1990-09-21 </td><td colspan=1 rowspan=1 > Cpl 8951 </td><td colspan=1 rowspan=1 > Tan Tiang Hwa </td><td colspan=1 rowspan=1 > 31 </td><td colspan=1 rowspan=1 > Traffic </td><td colspan=1 rowspan=1 > Cpl 8951 was on enforcement patrol with the ROV Enforcement Unit when he rammed into the back of a lorry which was reversing after missing a junction along Jalan Ahmad Ibrahim. </td></tr>
<tr> <td colspan=1 rowspan=1 > 1991-08-26 </td><td colspan=1 rowspan=1 > LCP 7290 </td><td colspan=1 rowspan=1 > Ong Chin Woo </td><td colspan=1 rowspan=1 > 23 </td><td colspan=1 rowspan=1 > CID </td><td colspan=1 rowspan=1 > His unmarked police car with three officers lost control and collided into an SBS bus at the junction of Upper Changi Road and Bedok South Road. </td></tr>
<tr> <td colspan=1 rowspan=1 > 1991-10-25 </td><td colspan=1 rowspan=1 > VC </td><td colspan=1 rowspan=1 > Kannan S/O Pinnasamy </td><td colspan=1 rowspan=1 > 19 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > He was riding his bicycle to work when he collided with a van at the junction of Boon Lay Drive and Corporation Road on 23 October 1991. </td></tr>
<tr> <td colspan=1 rowspan=1 > 1994-05-21 </td><td colspan=1 rowspan=1 > Cpl </td><td colspan=1 rowspan=1 > Hoi Kim Heng </td><td colspan=1 rowspan=1 > 24 </td><td colspan=1 rowspan=1 > Central </td><td colspan=1 rowspan=1 > While on a routine spot-check on a subject, Soh Loo Ban, along Nankin Street, Cpl Hoi and his partner, Cpl Tan Huang Yee gave chase when Soh stabbed Cpl Tan on his arm with a 10-cm knife after being stopped during a routine security check. </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1994-11-30 </td><td colspan=1 rowspan=1 > SSSgt 800 </td><td class="highlighted"  colspan=1 rowspan=1 > Boo Tiang Huat </td><td colspan=1 rowspan=1 > 47 </td><td colspan=1 rowspan=1 > Tanglin </td><td colspan=1 rowspan=1 > During a routine spot-check at Newton Road, SSSgt Boo requested Zainal Abidin Abdul Malik, 29, to open his car boot for Inspection, and upon doing so, Zainal withdrew an axe and struck SSSgt Boo in the head with it. </td></tr>
<tr> <td colspan=1 rowspan=1 > 1996-02-16 </td><td colspan=1 rowspan=1 > Cpl 7531 </td><td colspan=1 rowspan=1 > Asri Bin Mohd Jalil </td><td colspan=1 rowspan=1 > 31 </td><td colspan=1 rowspan=1 > Bedok </td><td colspan=1 rowspan=1 > The Fast Response Car he was in was responding to a case when it lost control, skidded, and crashed into a tree along Upper Changi Road East, resulting in his death. </td></tr>
<tr> <td colspan=1 rowspan=1 > 1996-09-14 </td><td colspan=1 rowspan=1 > SSSgt 2415 </td><td colspan=1 rowspan=1 > Ng Beng Huat </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Collapsed and died from a cardiac respiratory failure. </td></tr>
<tr> <td colspan=1 rowspan=1 > 1997-02-18 </td><td colspan=1 rowspan=1 > Cpl 2176 </td><td colspan=1 rowspan=1 > Lim Kok Seng </td><td colspan=1 rowspan=1 > 24 </td><td colspan=1 rowspan=1 > Traffic </td><td colspan=1 rowspan=1 > Cpl 2176 was travelling along Upper Changi Road when he collided with an on-coming garbage truck turning into Changi North Street 1. </td></tr>
<tr> <td colspan=1 rowspan=1 > 1998-10-26 </td><td colspan=1 rowspan=1 > SSgt 9858 </td><td colspan=1 rowspan=1 > Mohamad Asri Bin Amin </td><td colspan=1 rowspan=1 > 35 </td><td colspan=1 rowspan=1 > Central </td><td colspan=1 rowspan=1 > Killed in a hit-and-run accident while on his way to work at the junction of Tampines Avenue 1 and Tampines Avenue 10. </td></tr>
<tr> <td colspan=1 rowspan=1 > 1999-10-09 </td><td colspan=1 rowspan=1 > SC/Cpl </td><td colspan=1 rowspan=1 > Kwah Choon Khiat Johaan </td><td colspan=1 rowspan=1 > 23 </td><td colspan=1 rowspan=1 > Jurong </td><td colspan=1 rowspan=1 > Succumbed to his injuries in hospital after meeting with a traffic accident on 4 October 1999. The fast response car he was in crashed into the central divider along Woodlands Road near junction with Jalan Bumbong while responding to a message. </td></tr>
<tr> <td colspan=1 rowspan=1 > 1999-11-29 </td><td colspan=1 rowspan=1 > Sgt 98574 </td><td colspan=1 rowspan=1 > Ho Boon Chee </td><td colspan=1 rowspan=1 > 21 </td><td colspan=1 rowspan=1 > Jurong </td><td colspan=1 rowspan=1 > Killed when his fast response car crashed along Choa Chu Kang Avenue 1 into a tree while responding to a message in the night of 28 November 1999. </td></tr>
</table>
Question:
When was Boo Tiang Huat killed in the line of duty?
Answer:
The police officer, Boo Tiang Huat was murdered in the line of duty on 30 November 1994.