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The Watertown shoot-out

After the Tsarnaevs’ carjacking victim fled from his SUV at the Shell station, he told officers about his car’s tracking system. The police located the vehicle in Watertown and spotted the Mercedes on Dexter Avenue. Accompanying the SUV was a Honda Civic, driven by Dzhokhar. The two cars pulled over on Laurel Street, where a gunfight erupted.

The investigation concludes that it is highly likely MBTA Transit Police Officer Richard H. Donohue Jr. was shot and nearly killed by a fellow police officer firing at the Dzhokhar Tsarnaev fleeing in the Mercedes.

1. Laurel Street. The shoot-out

In a standoff with police, the suspects used a handgun and explosive devices, three of which exploded, including a pressure cooker bomb similar to the ones used in the Boston Marathon bombings. Nineteen police officers from six departments fired 195 rounds at the Tsarnaevs, who fired 56 rounds at police.

Watertown Sargeant Jeffrey Pugliese tackled Tamerlan after the officer ran out of bullets and Tamerlan's' gun stopped firing and he threw it at the officer. Other officers assisted Pugliese as he struggled with Tamerlan.

Dzhokhar turned the Mercedes around and drove at the officers who jumped out of the way. Dzhokhar ran over his brother in the stolen SUV abd dragged him 25 to 30 feet.

Dzhokhar turned the Mercedes around and drove at the officers who jumped out of the way. Dzhokhar ran over his brother in the stolen SUV abd dragged him 25 to 30 feet.

Mercedes SUV
Honda Civic
Tamerlan
2. Laurel Street & Dexter Avenue. Officer down

The SUV hit a cruiser and continued down laurel Street acrosss Dexter Avenue. As it crossed the intersection, officers on all sides of Laurel and Dexter streets continued to fire at it. At this time Officer Richard Donohue was hit by a bullet in his right leg near his hip.

Ballistic and explosive markers
Bullet impacts
Mercedes SUV
Officer Donohue
Tamerlan
3. Laurel & Spruce Street. Dzhokhar escapes

As the SUV exited the intersection officers chased it on foot and continued to shoot at the vehicle.

Mercedes SUV

SOURCES: Evidence photographs from neighbors; eyewitness accounts.

James Abundis, Javier Zarracina, Chiqui Esteban, Sean P. Murphy, Todd Wallack/Globe Staff

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