The man was found wandering the streets in shorts Tuesday evening in the 3400 block of West Lexington Street in the Homan Square neighborhood, police said. Investigators believe he may have been attacked at a home about a block east from where he was found.



He had been reported missing Monday by his parents who said he disappeared after they dropped him off at a McDonald's in Streamwood on Saturday, according to police. The man apparently met someone he considered a friend, and then got involved with a group of people who stole a van from Streamwood.



Streamwood police said the parents began getting text messages from someone "claiming to be holding him captive." As Streamwood officers investigated the texts, they "discovered Facebook video depicting (the man) being verbally and physically abused."



Streamwood investigators were soon contacted by Chicago police saying they had found the man who had been reported missing, police said. Soon after that, officers were called to a home in the 3300 block of West Lexington about 5:25 p.m. and found signs of a struggle and property damage that they linked to the attack, according to police.



The man was "traumatized" and taken to a hospital. "After his treatment at the hospital, he was released and his parents came into (the) Area North Detective Division," Duffin said.



The four people taken into custody, two men and two women, have given videotaped statements, Duffin said. Police haven't identified the individuals in custody, but said three are Chicago residents and one is from suburban Carpentersville.