Friends of suspected Boston Marathon bomber Dzhokhar Tsarnaev knew he had materials to build a bomb, an FBI agent testified Thursday, WBUR reports.
The testimony of FBI agent Farbod Azad came during the obstruction trial of Azamat Tazhayakov, who is accused of interfering with the investigation along with two other friends.
The three friends went to Tsarnaev’s dorm room after the bombing and are accused of removing a backpack with fireworks and a laptop.
According to Azad, Tazhayakov told him that one of his friend’s found a bottle of Vaseline and mouthed the words, “He used this to make the bombs.”
Tazhayakov insists he’s innocent.