Police on Friday identified Darren Wilson as the officer who shot and killed an unarmed black teenager in the St. Louis suburbs last weekend, touching off four nights of turbulence on the streets.
Thomas Jackson, the police chief of Ferguson, Missouri, made the announcement in front of a convenience store that was burned during the demonstrations.
He identified Wilson as a six-year veteran of the force. He said no prior disciplinary action had been taken against Wilson.
Michael Brown, 18, was shot to death during a confrontation with the officer on Saturday afternoon. Police have withheld most details about the encounter, including the number of bullets that hit Brown.
Jackson said that Wilson and other officers were in the area responding to a report of a “strong-arm robbery” at a different convenience store nearby.
The chief said earlier in the week that the officer had been taken to a hospital with injuries to his face. Jackson had declined for days to release the name of the officer, citing threats issued on social media.
The unrest escalated and peaked on Wednesday night, when police fired tear gas into crowds of protesters and arrested 16 people, including two reporters. Police were criticized for a military-style presence that included officers atop armored trucks aiming rifles at crowds.
Relative calm was restored Thursday night after Missouri Gov. Jay Nixon put the state Highway Patrol in command.