Updated

Police say the Boston Marathon bombing suspects used their carjacking victim's ATM card before a gunfight with authorities.

Watertown Police Chief Edward Deveau says the suspects also told the carjacking victim they bombed Monday's race and killed a police officer.

A car chase and shootout ensued when a Watertown officer saw the two brothers in different cars and followed them.

The suspects exchanged gunfire with police, wounding a transit officer and tossing a bomb and two hand grenades.

Deveau says Tamerlan Tsarnaev (tsahr-NEYE'-ehv) ran out of ammunition and police tackled him, before Dzhokhar Tsarnaev (joh-KHAR' tsahr-NEYE'-ehv) drove the carjacking victim's Mercedes toward them.

Police dove out of the way and the Mercedes dragged the other suspect's body down the block.

Police negotiated Dzhokhar Tsarnaev's surrender after a resident saw him in his boat hours later.