The armed man takes the driver's keys and sits in the driver's seat, while the kidnapped man moves to the passenger seat. The second man enters the back seat, and he and the driver begin talking in a foreign language.
They begin driving, and the man with the gun demands money. He is given $45 but wants more and demands an ATM card and password. They go to an ATM machine, where the men attempt to get money, before going to a gas station, where the captive man escapes.
Police later locate the stolen vehicle in Watertown, a suburb west of the city, and give chase. As they attempt to elude law enforcement, the Tsarnaev brothers throw two small bombs out of the car. A gunfight ensues, and Tamerlan is severely injured and left at the scene, while his brother escapes.
Police later find the car abandoned with an "intact low-grade explosive device" inside. Federal agents recover two more bombs at the site of the shootout. The bombs resemble those used in the marathon bombings. One even utilizes the same brand of pressure cooker.
On Friday evening, police learn that an individual is inside a covered boat in Watertown. After a shootout, police apprehend the man and search him. He has a university ID card, credit cards and other forms of IDs which say he is Dzhokhar Tsarnaev.
Due to wounds in his head, neck, legs and hand, he is transported to a hospital.
On Sunday, police search Dzhokhar Tsarnaev's dormitory room and recover a "large pyrotechnic" as well as a black jacket and white hat similar to the one Dzhokhar is seen wearing just before the explosions at the marathon.