WATERTOWN, Mass. —
During a long night of violence Thursday and into Friday, the brothers killed an MIT police officer, severely wounded another lawman during a gun battle and hurled explosives at police in a desperate getaway attempt, authorities said.
Late Friday, less than an hour after authorities lifted the lockdown, they tracked down the younger man holed up in the boat, weakened by a gunshot wound after fleeing on foot from the overnight shootout with police that left 200 spent rounds behind.
The resident who spotted Dzhokhar Tsarnaev in his boat in his Watertown yard called police, who tried to persuade the suspect to get out of the boat, said Boston Police Commissioner Ed Davis.
"He was not communicative," Davis said.
Instead, he said, there was an exchange of gunfire — the final volley of one of the biggest manhunts in American history.
The violent endgame unfolded just a day after the FBI released surveillance-camera images of two young men suspected of planting the pressure-cooker explosives at the marathon's finish line, an attack that put the nation on edge for the week.
Watertown residents who had been told Friday morning to stay inside behind locked doors poured out of their homes and lined the streets to cheer police vehicles as they rolled away from the scene.
Celebratory bells rang from a church tower. Teenagers waved American flags. Drivers honked. Every time an emergency vehicle went by, people cheered loudly.
"They finally caught the jerk," said nurse Cindy Boyle. "It was scary. It was tense."
Police said three other people were taken into custody for questioning at an off-campus housing complex at the University of Massachusetts Dartmouth where the younger man may have lived.
"Tonight, our family applauds the entire law enforcement community for a job well done, and trust that our justice system will now do its job," said the family of 8-year-old Martin Richard, who died in the bombing.