During two separate discussions of Black Lives Matters protests on Tuesday, Donald Trump claimed that people have called for moments of silence for Micah Johnson, the gunman who killed five police officers in Dallas and injured nine others, without specifying who or where.

Hours after the Dallas Police Department sparked a manhunt for Mark Hughes, a protester who was carrying a licensed and unloaded rifle at yesterday’s march through downtown where five officers were killed, a tweet urging followers to “help us find him!” is still online. Hughes was not in fact involved with the shooting, and his attorney said that he’s received “thousands” of death threats after being misidentified.

At a press conference on Friday morning, Dallas police chief David Brown described statements one of Thursday’s attackers made to negotiators before he was killed. Update (11:15 am): CBS News has identified the suspect as 25-year-old Micah Xavier Johnson, of Mesquite, Texas, a Dallas suburb.

Mark Hughes, the brother of protest organizer Cory Hughes, has been released from police custody after being identified as a suspect in Thursday night’s shootout in Dallas. “I just got out of the interrogation room for about 30 minutes with police officers lyin’, saying they had video of me shooting,” he told CBS DFW, “which is a lie.”

Authorities say they believe the attack in Dallas that killed five police officers and injured six more was carried out by at least four snipers who positioned themselves in “triangulated locations” on rooftops near the end of a Black Lives Matter parade route Thursday.

An unedited, extremely graphic bystander video provided to KDFW and played on air appeared to show a deadly shootout between a suspect in Thursday’s shooting in Dallas and a police officer.