Chaos erupted Thursday night in downtown Dallas when gunshots rang out during what began as a peaceful protest calling for justice in the wake of Philando Castile and Alton Sterling, two black men who were killed earlier in the week by police. Five officers were shot and killed, 6 others were injured. An update on their condition has not been released

Witnesses began tweeting and posting videos of the aftermath.

According to Dallas Police Chief David Brown, at least 10 officers were shot by snipers. The 11th officer was shot while exchanging gunfire with a suspect. Authorities say three people are in custody, none of their names have been released. A fourth suspect died in a standoff with police, after making threats about explosives. "The suspect told our negotiators that the end is coming," Brown said

The mayor said officers used explosives to 'blast him out.'

After conducting a sweep of the area, no explosives were found.

The police department's Twitter account sent out updates throughout the night and into early Friday.

One man was wrongfully accused of being a suspect because he wore a camouflage shirt.

President Obama was in Poland for the NATO summot during the time of the disaster, calling the shootings "calculated" attacks.

The attacks are being called the single, deadliest attack on police in the U.S. since September 11, 2001

Our prayers are with Dallas and the entire state of Texas.