You have been undergoing an IRS audit that is having a lot of stops and starts. Your auditor has been away for days with no real explanation for his or her absence. Once a case is referred to the CID, the auditor will put the tax return review on hold. While delays during an audit are not necessarily unusual, if they happen with no explanation and you know there is a possibility that you could be under investigation for civil or criminal tax evasion, it’s safest to assume that this is the case.