A sniper in Dallas, Texas shot 12 police officers during protests against police violence. At least five officers are dead.
Two civilians were also wounded.
Dallas Police Chief David Brown said the sniper fired "ambush-style" upon the officers.
The shooter has been identified as Micah Johnson, 25, according to The Associated Press.
Police would not confirm during a Friday morning news conference if other suspects are in custody or being sought. It is believed that the shooter acted alone. A search of his home found bomb-making materials and weapons.
The gunfire broke out around 8:45 p.m. Thursday. Video from the scene showed protesters marching along a street in downtown Dallas when the shots erupted and the crowd scattered, seeking cover.
A witness told KTVT, "Whoever was shooting had an assault rifle — and I know guns. The shots were in rapid succession.”
Scores of police and security officers were on hand. Police and others hunched behind cars outside a parking garage. Officers with guns drawn were running near and into the parking garage as police searched for the shooter.
The Associated Press contributed to this report.
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