A former close associate of James "Whitey" Bulger has offered gruesome details of three killings he says he watched Bulger commit.

Kevin Weeks described the killings Tuesday in Boston during his second day of testimony in the reputed gangster's trial for allegedly participating in 19 murders in the 1970s and 1980s.

Weeks says he was at a South Boston house with Bulger in 1985 when he heard a thud. He says he then saw Bulger choking 26-year-old Deborah Hussey, the step-daughter of Bulger's partner, Stephen "The Rifleman" Flemmi.

Weeks says that Flemmi then strangled her with a rope.

Weeks also says Hussey and two other murder victims were buried in a basement but later moved. He says he led authorities to the bodies in 2000.

[Associated Press]