If the criminal investigation arm of the IRS is investigating you, there may be several signs. Your bank records and your accountant may be subpoenaed, an IRS auditor from the collections or examinations division who was in contact with you may stop communicating with you, previous tax returns may be selected for an audit, you may receive an unusually large number of document or bank record requests from an IRS agent, or you may receive many questions of intent from the IRS agent who is examining your records. In some cases, an IRS special agent may come to your home or business seeking information. Taxpayers should immediately contact a Las Vegas criminal tax lawyer for advice if you are facing any of these situations.