Former Chicago Police Cmdr. Jon Burge is due to report to federal prison in North Carolina Wednesday to begin serving 4 1/2 years.
Burge was sentenced in January on charges of obstruction of justice and lying about the torture of suspects.
The former police commander leaves behind at least six still-pending federal civil cases against him, ramping up the $30 million the city already spent in legal fees.
A federal judge ordered Burge on Tuesday to answer questions from lawyers within seven days about two men who also say they were tortured.
Burge is serving his sentence at Butner Federal Correctional Complex in North Carolina, the same prison where Ponzi schemer Bernie Madoff is serving his 150 years.
Chicago's police pension board ruled Burge could keep his pension, but Illinois Attorney General Lisa Madigan filed a lawsuit to repeal the decision.
