Dallas Police Chief: “We are Heartbroken”

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DALLAS -- As the city of Dallas - and the rest of North Texas - starts the healing process from the horrific events of the past day, one of the main questions everyone wants an answer to - is why?

Why would 25-year-old Micah Xavier Johnson do this?!? Well, thanks to the Dallas police department, we have been given a glimpse into what may have triggered the deadliest attack on police since 9/11.

"Our hostage negotiator did an exceptional job of getting the suspect to talk before he died," said Dallas Police Chief David Brown. "I want to share with you some of the comments from the suspect. The suspect said he was upset about black lives matter. He said he was upset about the recent police shootings. The suspect said he was upset at white people. The suspect stated he wanted to kill white people, especially white officers."

Around the same time as Chief Brown was saying that, ATF agents started to descend on a neighborhood in Mesquite to search a house thought to be where Johnson lived. Detectives say they found bomb-making materials, ballistic vests, rifles, ammunition, and a journal of combat tactics.

After a long stand-off - sometime after 1:00am - Chief Brown says negotiations broke down.

"We saw no other option but to use our bomb robot and place a device on its extension for it to detonate  where the suspect was," said Brown.

But it's only the beginning of the long road to recovery for Dallas.

"We are heartbroken," Brown stated. "There are no words to describe the atrocity to this city. All I know is that this must stop. This divisiveness between our police and citizens."

Terror timeline: