Kevin Weeks, described in some media reports as Bulger's former right-hand man, told "60 Minutes" in 2006 that Bulger bragged about bribing six FBI agents and 20 Boston police officers.
"He stabbed people, he beat people with bats, he shot people, strangled people, run them over with car," Weeks said. "After he would kill somebody, he'd – it was like a stress relief, you know? He'd be nice and calm for a couple of weeks afterwards, like he just got rid of all his stress."
Edward MacKenzie, a retired drug dealer and enforcer for Bulger, told CBS News in 2011 he thought his ex-boss would "start talking and he'll start taking people down."
"Whitey was no fool," Mackenzie said. "He knew he would get caught. I think he'll have more fun pulling all those skeletons out of the closet."
After Bulger's arrest, retired Massachusetts State Police Major Tom Duffy similarly predicted a day of reckoning for crooked cops. "If he starts to talk, there will be some unwelcome accountability on the part of a lot of people inside law enforcement," Duffy told The Associated Press.