A Dublin man is being held at Santa Rita jail, police said, on assault charges after he hit another man with brass knuckles at Safeway on Dublin Boulevard early Friday. 

The fight happened after two shoppers got into an argument about the availability of checkstands at Safeway about 12:30 a.m. Friday, said Dublin police Lt. Steve Brown.

Customers were waiting in a long line and when a checkstand opened up there was a dispute about who was next in line, he said.

The checker said the victim, whom police did not name, was next in line. The victim made his purchase and waited in the parking lot while his girlfriend talked on the phone. 

When the man who had disagreed about whose turn it was came out, the two got into an argument in the parking lot, Brown said.

The suspect, Parker Wilson, 19, allegedly pulled out brass knuckles and hit the victim, police said.

A witness who was at Safeway during the fight identified Wilson. He was arrested Friday at his home on Tamarack Drive in Dublin. 

He is being held at Santa Rita jail on charges of assault with a deadly weapon.