A man in a group of patrons who refused to wear face masks at a Pacific Beach bar sucker-punched a manager in an assault that was captured on video, according to the manager and police.

Bystander and surveillance videos show the assailant running up to a group scuffling in the outdoor seating area of 710 Beach Club about 7 p.m. Sept. 5 and throwing a single punch. The blow left the bar manager with a broken nose.

Tony Aversa told NBC 7 he greeted a man who asked to speak with a manager after the man and others in his party refused to wear masks, which are required under county health regulations unless patrons are eating or drinking.

“[The man] claimed our security guard had been rude — that was his initial complaint,” Aversa told the news station. “I was like, ‘I’d be happy to talk to you about it. I just need you to put a mask on. You’re literally within inches of my face right now.’”

Read the full story on LATimes.com.