(CNN) -- A federal grand jury has returned a sealed indictment against former New York Police Commissioner Bernard Kerik, sources familiar with the investigation said Thursday. No details of the charges involved were immediately available. The indictment is expected to be unsealed Friday, two sources familiar with the probe told CNN.
Prosecutors had been looking into allegations against Kerik that include bribery and tax evasion, sources said earlier this week. The indictment comes a year after admitting to misdemeanor charges of financial impropriety.
Kerik, 52, is a longtime friend and former protege of former New York City Mayor Rudy Giuliani, now the Republican presidential front-runner in national polls. Kerik was frequently by Giuliani's side in the days after the September 11, 2001, attack on the World Trade Center, and his role as the city's police commissioner propelled him into the national spotlight.
President Bush nominated Kerik to be secretary of homeland security after the president's 2004 re-election. But Kerik withdrew his name from consideration after allegations that he employed a nanny whose immigration status was questionable.
http://www.cnn.com/2007/US/11/08/kerik.indictment/?iref=mpstoryviewb