(CBS/AP) BOSTON - Stephen "The Rifleman" Flemmi, the ex-associate of reputed gangster James "Whitey" Bulger, says Bulger killed Flemmi's stepdaughter because she was using drugs, getting arrested and dropping their names when she got in trouble.
Flemmi, testifying Tuesday at Bulger's racketeering trial in Boston, says Bulger strangled Deborah Hussey because she had become uncontrollable.
During cross-examination, Flemmi denied a suggestion that he, not Bulger, killed Hussey.
But Flemmi also acknowledged that he twice had oral sex with Hussey in what he called a consensual act and "a moment of weakness."
Flemmi acknowledged that Hussey's mother had been his live-in girlfriend since Hussey was just a toddler and that she had called him "Daddy."
Bulger is accused of participating in 19 killings.
Flemmi pleaded guilty to 10 murders and is serving a life sentence.