"Are you gay, though?" the man asked, before punching the victim in Salt Lake City early Sunday.

Police in Salt Lake City, Utah, are investigating after a man was filmed assaulting another man early Sunday after asking if he was gay. "Are you gay, though?" the man asked Sal Trejo, 29, in an eight-second video of the incident Trejo posted to Twitter.

"Oh, I am," Trejo responded. "Oh, then you're gay," the man said. "Yeah, but you called me a [faggot]," Trejo began to say before he was struck. After video of the incident went viral, Salt Lake City police tweeted on Monday afternoon that, "Detectives have made contact with the suspect who is cooperating fully with the #investigation."



My friends and I were assaulted by this homophobic man in downtown Salt Lake City last night. Anyone know him? The police are interested in having a chat with him. #SaltLakeCity @slcpd @slcmayor @EqualityUtah

The incident occurred outside a bar on Main Street in the city's downtown area, Trejo told BuzzFeed News in a phone interview on Monday afternoon. Trejo, who works as a social media manager, said he and friends were waiting for an Uber when the man exited a nearby bar, passed Trejo's group, and told someone he was speaking to on the phone that he was "standing by the gay guy in the camel coat." This comment prompted objections from Trejo and his friends. "It was weird for someone to say something like that and it very quickly escalated on his end to calling us faggots and calling the girls who were with us fat pigs," Trejo said. That's when Trejo and his friends pulled out their phones and captured the assault. He said he believes the man was trying to hit his face, but ended up striking his upper arm. As the man was then being pressured to leave, Trejo said the man briefly pulled out a small knife and threatened the group, before climbing into his BMW and driving into oncoming traffic. He said the man appeared intoxicated.

Courtesy of Sal Trejo Sal Trejo

Trejo said a detective told him on Monday afternoon that a man had phoned police to identify himself as the man in the video.

He said he was thankful that his video of the incident went viral and may have prompted the man to turn himself in. "I just want him to know that what he did isn't OK, and that it's not OK to be aggressive towards people in any way," he said. "I feel bad that he has to go through all this because I know it's a lot, Trejo said, "but at the same time what he did isn't right and I hope he learns a lesson in kindness."

Rick Bowmer / AP