Law enforcement officials in Utah are investigating after a video was posted online that appears to show an unidentified suspect hurling a punch at another man after asking him about his sexuality. Posted by Sal Trejo, the eight-second video shows a man standing outside Rest, a Salt Lake City nightspot, shortly after midnight on Sunday. Speaking to Trejo as the encounter is captured on a cellphone, the man asks, “Are you gay, though?” When Trejo answers affirmatively, the man announces, “Oh, then, you’re gay.” He then appears to swing a fist at Trejo, knocking his phone to the ground.

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@EqualityUtahpic.twitter.com/1tPFSCADOp — Salonge Knowles (@saltrejo) February 17, 2019

Trejo elaborated on the claims in a second tweet Sunday, saying the man approached him and his friends unexpectedly and began “making homophobic and misogynistic comments towards our group.” After the initial punch, “he then pulled out a knife and pointed it towards us,” Trejo wrote. “This man is dangerous and needs to be held accountable for his actions.”

The Salt Lake City Police Department said Monday that it “made contact” with the suspect, “who is cooperating fully with the investigation.” Police didn’t release the suspect’s name or any identifying details but told local TV station Fox 13 that the incident is being investigated as a hate crime.

SLCPD Detectives have made contact with the suspect who is cooperating fully with the #investigation. — SLC Police Dept. (@slcpd) February 18, 2019