CHICAGO, Illinois -- The beating and torture of a mentally disabled man was live-streamed on Facebook, with his assailants shouting anti-Donald Trump and racial obscenities during the attack, reports say.

Police are now questioning four suspects, two men and two women, in connection with the beating of the white victim, the Chicago Tribune reports. The victim was a high-risk missing person from the suburb of Crystal Lake, according to CBS News.

The video of the beating lasts about 30 minutes and shows the victim tied up and with his mouth taped shut, according to CNN. The victim is punched and kicked, is peppered with cigarette ashes, and his forehead is cut with a knife.

People can be seen in the video laughing and eating during the attack, reports say.

The assailants in the video can be heard yelling "f--- Donald Trump" and "f--- white people," CNN reports. The attack occurred on Tuesday in an apartment on Chicago's West Side, police tell CBS News.

According to WLS Channel 7 in Chicago, it's believed the victim was held for 24 to 48 hours before being let go.

The Tribune says the victim was later found wandering the city's Homan Square neighborhood in shorts with another man. He was taken to a hospital, where he was treated and released, then reunited with his parents.

Chicago Police Superintendent Eddie Johnson tells the Tribune the four suspects could face hate crime charges.

"It's sickening. It makes you wonder what would make individuals treat somebody like that," Johnson tells the Tribune. "I've been a cop for 28 years and I've seen things that you shouldn't see. It still amazes me. ... I'm not going to say it shocked me but it was sickening."

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