US Army reservist named as lone gunman in Dallas police ambush

A US Army reservist who served in Afghanistan, embraced militant black nationalism and professed a desire to "kill white people" has been named by authorities as the lone gunman in a sniper attack on police in Dallas that left five officers dead. Authorities said on Friday the suspect, identified as Micah Johnson, 25, was killed by a bomb-carrying robot deployed against him in a parking garage where he had holed up, refusing to surrender during hours of negotiations with police.