A 48-year-old Connecticut drug kingpin who killed a mother and her 8-year-old son so she wouldn’t testify against his brother has received a commutation as part of former President Joe Biden’s clemency for nearly 2,500 federal inmates he described as “non-violent.”

Adrian Peeler, a Bridgeport drug trafficker, killed a woman named Karen Clarke and her son just weeks before they were supposed to testify against his brother, who was accused of shooting Clarke’s boyfriend in front of the child.

The mother and son were ambushed as they returned home to their apartment in January 1999. Police found the boy with a bullet hole in the back of his head on the stairs and Clarke riddled with gunshot wounds and her outstretched hand inches from a phone, according to CT Post.