UPDATE: Federal investigators tell CNN that they believe Micah Xavier Johnson was the only gunman in the Dallas ambush.
Micah Xavier Johnson, 25, has been identified as one of the suspected gunmen in an ambush Thursday that left five Dallas law enforcement officers dead and seven more officers injured, multiple law enforcement sources told ABC News.
Johnson, who died in the incident, had served as an Army Reservist until April 2015, defense officials said. He was trained and served in the Army Reserves as a carpentry and masonry specialist, they said.
Police said he had told hostage negotiators he was angry about recent fatal shootings of black men by police elsewhere in the United States and that he wanted to kill white people, especially police officers.
The gunman “expressed anger for Black Lives Matter” and told a hostage negotiator he “wanted to kill [police] officers,” Dallas Police Chief David Brown said today.
Police spent hours negotiating with Johnson before he was killed by an explosive strapped to a police robot.
“We’re hurting,” Brown said. “Our profession is hurting. Dallas officers are hurting. We are heartbroken. There are no words to describe the atrocity that occurred to our city.”
Officials said earlier at least two gunmen were involved.
Three other suspects — two men and one woman — have been detained by police, Dallas Mayor Mike Rawlings said. However, it now appears Johnson was the only one who fired on police.
More from ABC News here.