Washington DC’s CBS affiliate reports:

A fight outside of the Shack Shack near Dupont Circle over the weekend is being investigated as a suspected hate crime. According to a police report from the Metropolitan Police Department, Saturday night around 6 p.m., Christian Dingus reported to police that he was assaulted by multiple people. The police report states that the incident is being investigated as a possible anti-gay hate crime based on sexual orientation.

Dingus was treated by D.C. Fire emergency medical service on scene.  A video circulating online shows the attack. In the video, what looks to be three Shake Shake employees begin shoving and punching a man on the street outside the store. The attackers knock the man down and begin kicking him. Two more people come from behind and one appears to attempt to pull some of the other attackers away from the man on the ground.

NBC News reports:

Christian Dingus, 28, was with his partner and a group of friends at a Dupont Circle location Saturday night when the incident occurred, he told NBC News. They had put in their order and were hanging around waiting for their food.

“And while we were back there — kind of briefly — we began to kiss,” Dingus said. “And at that point, a worker came out to us and said that, you know, you can’t be doing that here, can’t do that type of stuff here. And then one of the men, pretty forcefully, like, pushed me out of the way on my shoulder.”

“And then, you know, next thing I know, that kind of just, I think, sparked the rest of them. … They all just kind of started attacking me at that point, dragging me back through the floor and continuously punching me in my head.”

Dingus says he was treated at the hospital for a concussion and contusions. Dupont Circle has been a popular DC gayborhood for decades. Shake Shack, which regularly celebrates Pride Month on social media, says it is investigating the incident.