The break-in occurred at the South Side offices of veteran Chicago criminal defense lawyer Sam Adam and his son, Samuel E. Adam, police said. They are two of the three leading members of the team defending Blagojevich on charges that he schemed to sell or trade President Barack Obama's former U.S. Senate seat.

Chief of detectives Steve Peterson told a news conference that detectives don't know whether anything related to Blagojevich's federal fraud case was contained on the computers. But he said they are interviewing the attorneys.

Even if the computers contained sensitive material related to the federal case against Blagojevich, the lawyers had all of its material in backup files on a master server elsewhere in the offices that was untouched by the burglars, according to an individual with knowledge of the legal defense team.