Police Chief David Brown said perhaps up to six snipers ambushed law enforcement, striking 10 officers and a civilian.
“Working together with rifles, (they) triangulated at elevated positions in difference points in the downtown area where the march ended up going,” Brown said.
“He has told our negotiators that the end is coming and he’s going to hurt and kill more of us – and that there are bombs all over the place in this garage and in downtown,” Brown said.
“We still don’t have a complete comfort level that we have all the suspects,” Brown said during a 12:30 a.m. news conference.
Nor do authorities know what motivated the attack. The chief said members of the department had met with protest organizers several times before the event.
“We have yet to determine whether or not there was some complicity with the planning of this, but we will be pursuing that,” he said.
Earlier in the evening, police published on social media a photo of a gun-toting man, with the message, “This is one of our suspects. Please help us find him!.” They later said the man had turned himself in, but it remained unclear early Friday if he has any connection to the rampage.