The Dallas shooting suspect was identified as Micah Xavier Johnson, 25, a resident of the Dallas area Johnson had no known criminal history or ties to terror groups, U.S. law enforcement officials said A hostage negotiator spoke with the gunman at length before he was killed at about 2:30 a.m. The chief said the attacker said he was upset “with white people” and recent police shootings He also said he was not affiliated with any groups and that he acted alone, but police believe others were involved