Texas: Dallas sniper attack: 5 officers killed, suspect identified

inside job..

(CNN) - The ambush began with gunshots that killed five officers and sent screaming crowds scrambling for cover. It ended when a Dallas police bomb squad robot killed a gunman after negotiations failed.

Investigators have identified the dead suspect: 25-year-old Micah Xavier Johnson of Mesquite, Texas. But they're still trying to answer key questions. Chief among them: Are any other suspects on the loose?

Federal law enforcement officials believe Johnson was the only shooter in the ambush that began Thursday night, according to law enforcement officials briefed by the Dallas police.
Dallas police Chief David Brown earlier suggested that other suspects played a role, too.

"Through our investigation of some of the suspects, it's revealed to us that this was a well-planned, well-thought-out, evil tragedy by these suspects," Brown said at a prayer vigil for the victims Friday afternoon. "We won't rest until we bring everyone involved to justice."

The deadly gunfire erupted in Dallas as videos showing two African-American men shot by police in Louisiana and Minnesota spurred protests and debate over police use of force across the country.