4 Teens Arrested Over Facebook Live Video

Two men and two women were arrested for their suspected involvement in a live-streamed video that appeared to show the assault of a man who had been reported missing, according to police.
1:57 | 01/05/17

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Transcript for 4 Teens Arrested Over Facebook Live Video
Another shocking case out of Chicago, a video streamed on Facebook live. Shows a young man held captive and tortured. ABC's Alex Perez has the latest. We should warn you this video is tough to see. Reporter: This morning, four suspects in custody for their alleged involvement of this disturbing video streamed via Facebook live for the world to see. The video showing what appears to be a violent assault of 18-year-old African-American teenagers holding hostage a white man who authorities say suffer from mental health challenges. Restrained with duct tape covering his mouth. At one point, the attackers making a threat to president trump. Police spotted him disoriented wandering the west side of Chicago. They saw this individual was in distress and in crisis. Reporter: They have yet to release the names of the suspects. But describe them as two men and two women. It's sickening. It makes you wonder what would make individuals treat somebody like that. I've been a cop for 28 years and I have seen things that you shouldn't see in a lifetime. But it's still amazes me how you still see things that you just shouldn't. Reporter: Police now questioning the suspects and investigating whether the incident is a possible hate crime. If the facts guide us in that direction we'll certainly charge them appropriately. Reporter: And authorities say the victim was treated at the hospital and released to his family. George. Okay, Alex, boy, that officer said it, just sickening. Sickening indeed.

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

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