At least four officers died and seven others were wounded after gunfire erupted at a protest in downtown Dallas, according to police.
Police Chief David Brown said that two snipers opened fire at a demonstration from elevated positions around 9 p.m., and that one suspect was in custody after a shootout with police.
He said in a statement that two wounded officers were in surgery and three were in critical condition.
It said that three other of its officers were among the wounded, but did not have life-threatening injuries.
Brown said that two shooters “were positioning themselves in a way to triangulate on these officers from two different perches in the downtown area and planned to injure and kill as many law enforcement officers as they could.”
However, some questioned whether the man was one of the shooters, and he was seen in a Dallas Morning News video walking on the street after shots had been fired.
Shortly after circulating the photo, the Dallas Police said that the pictured man had turned himself in to authorities.
Brown also said that his officers believed there might be a bomb somewhere in the downtown area.
A later release from the police said that a suspicious package was found near the shootout suspect and was being secured by a bomb squad.
Witness Ismael DeJesus told CNN that he saw a gunman pull up to a downtown hotel area in an SUV later in the evening and shoot a police officer.
“It looked like an execution. He stood over him when he was down and sot him maybe three of four more times in the back,” he told the network from the Crowne Plaza hotel.
“It did looked planned. I mean he just parked and he knew where to stand. He had ammo ready … Walked over to the pillars. Put a magazine in and was ready to start firing.”
It was not immediately clear if the officer that DeJesus saw was one of the 11 officers police said had been wounded.
This is a developing story and will be updated.