U.S Attorney Patrick Fitzgerald showed an interest in reputed mob boss John "Pudgy" Matassa when he questioned a deputy marshal accused of leaking secrets to the Outfit.
It's one of several fascinating facts that came up during the hearing for the deputy marshal, John Ambrose.
The hearing centered on Ambrose's effort to get the statements he made to Fitzgerald and FBI Chicago Chief Robert Grant tossed out and not allowed in at trial.
Ambrose contends he gave those statements when he was in custody, without receiving his Miranda rights.
Fitzgerald testified during Ambrose's hearing that he was there to pitch him to cooperate and talk to the case agents. Fitzgerald said he clearly told Ambrose he wasn't under arrest.
The prosecutor did ask Ambrose some questions, after Ambrose persisted during their September 2006 meeting in giving his account of what he had done.
The feds contend Ambrose leaked information about Nicholas Calabrese, a mob killer who would decide to flip for the feds and go into witness protection.
When Calabrese came to Chicago to take FBI agents to murder sites, one of his guards would be Ambrose at times.
The feds discovered that Ambrose was the leak when two mobsters, Outfit boss James Marcello and his half-brother, Michael, were secretly recorded talking about information that Nicholas Calabrese was providing to the feds, well before Calabrese's cooperation became public, according to court records.
The two mobsters never named Ambrose but described him in such specifics that the details pointed straight at him, according to the feds.
In Ambrose's discussion with Fitzgerald, the top prosecutor wanted to know if Ambrose ever met with Matassa at a Chinese restaurant, according to hearing testimony.
Ambrose denied knowing Matassa, much less ever meeting him in a Chinese restaurant, according to hearing testimony.
Matassa has strong ties to the Marcellos. When Outfit chief James Marcello got out of prison, Matassa was Marcello's driver, a trusted, important position, given Marcello's high rank
Matassa has said he grew up with Michael Marcello and would routinely meet him as an adult, according to testimony Matassa gave during a labor union hearing.
Matassa was described in those hearings as a made member of the North Side crew, who oversaw mob interests in pornography businesses and helped run mob gambling operations in Chicago and Rosemont.
As a younger man, Matassa was a driver for the man picture below, Michael Glitta, who oversaw the mob's control of the porn business for the North Side crew.
For those mob ties, Matassa was booted in 1999 from Laborers' Local Union 2 where he was president and business manager.
As for Ambrose's hearing, it will continue in January, when the judge is expected to issue a ruling.