The gunman killed in a stand-off with Dallas police said he wanted to kill white people, especially officers, the city’s police chief has said.
The suspect, named as Micah Johnson, 25, said he was upset about the recent police shootings of black people, Police Chief David Brown said.
Five police officers were killed and seven wounded during a march against the shooting of black men by police.
Three people are in custody but it is not clear if there were other gunmen.
The protest in Dallas took place after this week’s deaths of Philando Castile in Minnesota and Alton Sterling in Louisiana.
Mr Brown said the suspect had been killed when police used explosives placed by a robot to end a tense stand-off in a building where he had taken cover. Before that, he had spoken to a negotiator.
