A Dallas police helicopter flies near the scene where 12 Dallas police officers were shot.
Police Chief David Brown blamed "snipers" and said early Friday that three suspects were in custody. (It was later reported that police believe the others arrested were not related to the shooting.)
At a Friday press conference Chief Brown reported one suspect, who was later killed, told negotiators that he was "upset" about the recent police shootings of black men: "The suspect said he was upset at white people. The suspect said he wanted to kill white people - especially white officers."
Mayor Mike Rawlings said the suspect who made that statement was slain by a police explosive in a downtown parking garage where he had exchanged gunfire with authorities. He was identified as 25-year-old Micah Xavier Johnson.