Police Chief Reveals New Details in Michael Brown Shooting

Authorities say either Brown or his friend fought the policeman before the shooting, leaving cop's face swollen.
2:33 | 08/14/14

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Transcript for Police Chief Reveals New Details in Michael Brown Shooting
breaking story, the vice erupting on the streets of St. Louis. These were incredible pictures coming in. Police in riot gear firing tear gas to break up protesters angry over the death of an unarmed teenager. The police chief weighing in on whether or not to reveal the officer who shot him injured in the accident and we get his condition. ABC's Steve osunsami is in Ferguson, Missouri, with the very latest for us, Steve. Reporter: There are many who believe the police could use a lighter hand and arrested two reporters last night and an elected official they say because they didn't move fast enough. A state senator says she had tear gas thrown at her and she approves the budget for the state patrol. Even president Obama has been briefed on the developments here. Overnight, protests turned violent again on the streets of Ferguson, Missouri. Police responded with tear gas sending the crowd running. As civil rights groups protest the police shooting that killed 128-year-old Michael brown and the lawsuits mount, the chief of police telling ABC news his officer was hurt in the incident. Authorities say either brown or his friend fought with the policeman before the shooting. His face was swollen so he'd obviously been hit or punched or something like that. Reporter: He says he and his officers are getting death threats daily and says he won't release the name of the officer involved in the shooting unless his officer's charged with a crime or a court makes him then he could always appeal. Prosecutors say it could takes weeks before they decide if the shooting is a crime. We have difficulty reaching a lot of witnesses. They don't contact the police. You know, we're having trouble locating them. Reporter: They are talking with Dorian Johnson who was walking with brown when he says the officer tried to get them off the street. He tried to force his door open. It ricocheted and bounced back to him and I guess that, you know, got him a little upset. Reporter: Take a look at this exclusive video from the scene. There's the officer's SUV. Police say he started shooting from inside. Shot eight times. Reporter: Listen as this neighbor describes what she saw. The first shot he shot out of the car. The other shots he stood over him and pow, pow, pow, pow, pow, pow. Reporter: For now the concern is that racial tensions here are about to explode. There's been a lot of talk about whether Michael brown had a record which his family feels is an offensive question but this morning St. Louis county says, no, no arrests, no convictions. David. All right, Steve osunsami. He's been there every step of the way. And he'll stay there.

This transcript has been automatically generated and may not be 100% accurate.

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