A disabled suburban Chicago teen who had gone missing turned up in a disturbing Facebook Live video in which he is being tortured as chants of "f--- Donald TrumpDonald John TrumpPennsylvania Supreme Court strikes down GOP bid to stop election certification Biden looks to career officials to restore trust, morale in government agencies Sunday shows preview: US health officials brace for post-holiday COVID-19 surge MORE" can be heard.

Chicago police arrested four suspects in connection to the video, which showed a group of people gagging and attacking the victim, according to The Guardian.

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In the video, chants of "f--- Donald Trump" and "f--- white people" could be heard.

Police superintendent Eddie Johnson said Wednesday the suspects would face "the full weight of the Chicago police department."

“Video of a brutal act towards an adult male with mental health challenges made its way onto social media,” Johnson said, according to the Guardian.

“The images in the video put on display the brazenness of the offenders who assaulted the victim and then broadcast it for the entire world to see.”

Police Commander Kevin Duffin said investigators are looking into whether the attack was a hate crime and "whether or not this is sincere or just stupid ranting and raving."

Duffin said the victim is "traumatized by the incident."

"It’s very tough to communicate with him at this point,” he said about the victim.

“It took most of the night for him to calm down enough to be able to talk to us.”

This report was updated at 7:36 a.m.