The gunman identified as 25-year-old Micah Xavier Johnson — held himself up in a parking garage after his Thursday night rampage.

Johnson detailed his sick conquest to mediators before he was killed by a police bomb robot, Dallas Police Chief David Brown said at a Friday morning press conference.

Gunmen shot and killed five police officers and wounded seven others during a protest over fatal police shootings of black men in other states, authorities said.  It appeared to be the deadliest day for U.S. law enforcement since the 2001 terrorist attacks.
Mayor Mike Rawlings said the dead suspect was slain by police using explosives in a parking garage where Johnson had exchanged gunfire with officers. Before dying, the police chief said, the dead suspect declared to officers that he was upset about recent shootings and wanted to kill whites, “especially white officers.”

“The suspect said he was upset about Black Lives Matter,” Brown told reporters. “He said he was upset about the recent police shootings. The suspect said he was upset at white people. The suspect said he wanted to kill white people.”

Micah Xavier Johnson, 25, has been identified as the shooter in the Dallas shooting.

A law enforcement source told CBS News that monitoring of social media overnight indicated an increase of threats to police online with one post saying “kill cops,”  The suspect had also said he was not affiliated with any groups and stated that he acted alone, Brown added. None of the suspects were identified by police, and the police chief said he would not disclose any details about them until authorities were sure everyone involved was in custody. Brown said his department and their families were grieving and that the divisiveness between police and the public must stop.

“We don’t feel much support most days,” Brown told reporters. “Let’s not make today most days. Please, we need your support to be able to protect you from men like these who carried out this tragic, tragic event.”

The shooting began about 8:45 p.m. Thursday while hundreds of people were gathered to protest the week’s fatal police shootings in Baton Rouge, Louisiana, and suburban St. Paul, Minnesota. Brown told reporters the snipers fired “ambush style” on the officers. Two civilians were also wounded, Rawlings said.