Attorney: Mob defendant being held in isolation

An attorney for a reputed Chicago mobster says his client is being held in isolation as he awaits sentencing on federal charges.

Attorney Joseph Lopez says he's been trying to visit Frank Calabrese (KAL'-uh-brees) at the Metropolitan Correctional Center since last week.

Lopez says he got a letter from the U.S. Attorney's office saying Calabrese had been put in isolation.

Randall Samborn, spokesman for the U.S. Attorney's office, said he could not comment on the situation late Tuesday.

Media reports say the FBI can now listen in on Calabrese's conversations with family members and attorneys and that his cell is being bugged.

Calabrese is among those convicted in September 2007 of taking part in a vast crime network.