Four Dallas law enforcement officers were shot and killed and 7 others were wounded after two snipers opened fire at the end of a march and rally in downtown Dallas. A civilian was also shot and injured in the attack, police said.
Dallas Police Chief David Brown described what officers believe is a coordinated attack, with at least four people — three men and one woman — involved. One of the men is surrounded by officers at a parking garage, others are in custody being interviewed.
"This is still a very tenuous situation," Brown said, at a 1:30am ET press conference.
A person of interest whose photo was distributed by police has turned himself in, the department said.
Dallas Police Chief David Brown said law enforcement appeared to have been intentionally targeted by the shooters, who were trying to triangulate their fire on officers. Some officers were shot in the back, Brown said.
"It is a heartbreaking moment for the city of Dallas," Dallas Mayor Mike Rawlings said. "I ask everybody focus on one thing right now and that is Dallas police officers, their families, those that are deceased, those that are in the hospital fighting for their lives."
Police are scouring downtown Dallas additional suspects, and as a precaution, the campus of El Centro College in downtown was placed on lockdown.
The Dallas attack occurred during a protest in the city's downtown against the shootings earlier this week of two African-American men by white police officers in Baton Rouge, La., and suburban St. Paul, Minn.
Javier Giribet-Vargas, an intern with Dallas member station KERA, was covering the protests when the shootings happened.
"Gunfire broke out around 8:45 p.m. Thursday. Protesters were marching along a street in downtown when the shots erupted and the crowd scattered, seeking cover.
"Scores of police and security officers were on hand.
"Javier Giribet-Vargas, a KERA intern, was covering the protests when the shootings happened. 'I don't know what happened, but by the Bank of America building, there was a shooting; I ran, I dropped my phone. There's like 30 to 40 cop cars, probably more.' "
The earliest reports of the shootout came via witnesses who had been documenting the protest march on social media. (Editor's note: The following video includes language some may find objectionable.)
LA law enforcement on alert after Dallas attacks
Los Angeles police are on heightened alert as they monitor the situation, according to a Tweet from the department, though they say there haven't been any incidents reported in the city. The L.A. Sheriff's Department, too, reports it is in a "heightened state of awareness" after the attacks.
LAPD Chief Beck tweeted out his condolences Thursday night:
L.A. Mayor Eric Garcetti said the "officers died protecting our collective right to peacefully protest" and called for unity against "the disease of hate."
This is a rapidly developing story; we'll provide updates as they become available, including corrections should any of the above information prove to be incorrect.
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Correction: An earlier version of this post incorrectly stated that there were two snipers involved in the attack. Police now say there was only one person shooting.