Before Tamerlan Tsarnaez was accused of planting bombs at the finishing line at the Boston Marathon, the slain suspect participated in a triple murder in a nearby town, his friend told investigators, Reuters reports.
The newly filed court records said Ibragim Todashev told investigators that Tsarnaez took part in a triple stabbing.
During that interview, Todashev was killed in a reported confrontation with authorities, who remain tight-lipped about the incident.
Todashev’s father has claimed foul play.