Micah Johnson
Media playback is unsupported on your device
Video

Dallas shooting suspect Micah Johnson 'acted alone'

Micah Johnson, the man accused of killing five police officers in a gun attack during a protest rally in Dallas, acted alone, officials believe.

Bomb-making material, rifles and a combat journal were found at the home of Johnson, who was himself killed.

The Dallas protest was against the killing of black men Philando Castile and Alton Sterling by police, and similar rallies drew thousands across many US cities on Friday.

BBC's David Willis reports.

Go to next video: 'There are cops down. It's a sniper'