(CBS) - According to the federal criminal complaint against the surviving suspect in the Boston Marathon bombings, one of the Tsarnaev brothers confessed to the bombing while allegedly carjacking a man in Cambridge, Mass.
"Did you hear about the Boston explosion?," one of the suspects allegedly told the victim. "I did that."
The suspect then allegedly showed the victim his gun around midnight on Thursday April 18, and had him drive to a location to pick up another man. According to the complaint, the two suspects took $45 from the victim, who was able to escape when the men exited the car at a gas station convenience store.
The complaint, which was released Monday, does not specify which brother initiated the alleged carjacking. Dzhokhar Tsarnaev's older brother, Tamerlan, died after sustaining injuries in a shootout with police during the early morning hours of April 19.
On April 21, authorities searched Dzhokhar's University of Massachusetts at Dartmouth dorm room and according to the complaint they recovered "a black jacket and white hat of the same general appearance as those worn by Bomber Two...and BBs."
Dzhokhar Tsarnaev, 19, faces charges of using and conspiring to use a weapon of mass destruction. He is currently hospitalized. According to the complaint, he sustained "apparent gunshot wounds to the head, neck, legs and hand."