A close-range gunfight outside a gas station that houses a Dunkin’ Donuts in the Avondale neighborhood left a man dead and three people injured early Tuesday, police said.

Two men opened fire on each other at 2:44 a.m. after getting into an argument that led to one of the men punching the other in the face outside the Shell gas station at the corner of Belmont and Sacramento, according to police.

The men were part of two separate groups — totaling seven people — that arrived at the gas station in different cars, said Chicago Police spokesman Anthony Guglielmi.

Omar Campuzano, 25, was shot multiple times and was taken to Illinois Masonic Medical Center, where he was pronounced dead, police and the Cook County Medical Examiner’s Office said. He lived in Avondale.

One person was killed and three people were wounded in a shooting in Avondale Tuesday morning | Tyler Lariviere/Sun-Times

One person was killed and three people were wounded in a shooting in Avondale Tuesday morning | Tyler Lariviere/Sun-Times

A 37-year-old man was in serious condition at the same hospital with multiple gunshot wounds, police said.

Two other people, a man and a woman, were shot in the gun fight and drove about a block west on Belmont before being taken to Stroger Hospital. The woman, 24, was shot in the neck and the man, 20, suffered multiple gunshot wounds. Both were in critical condition, police said.

The shooting occurred less than a block from Linne Elementary School. A Chicago Public Schools spokesman was not immediately available for comment.

Two handguns were recovered from the scene. And five of the seven people involved in the incident have histories with the police department, Guglielmi said, declining to elaborate.

Individuals from each group apparently knew each other, Guglielmi said, again declining to provide details.

When the crime scene tape was removed and the businesses reopened shortly after 8 a.m., customers entered through a glass door with two bullet holes in it.

At least two people were wounded in a shooting at a Shell gas station in Avondale Tuesday morning | Tyler Lariviere/Sun-Times

One person was killed and three people were wounded in a shooting in Avondale Tuesday morning | Tyler Lariviere/Sun-Times

A Dunkin’ Donuts employee washed away a pool of blood outside the front door moments before four detectives arrived at 9 a.m. to review surveillance footage.

The path of the bullets could be traced through a nylon banner advertising frozen caffeinated beverages and a plastic rack holding two liter bottles of soda. One smashed into the metal frame of a cooler door. The final destination of the other was unclear.

Guglielmi declined to say if the groups had gang ties. He said the shooting occurred in an area that does not have a history of gang conflict.

“This is generally a quite area,” said Ald. Deb Mell (33rd). “When something like this happens it shakes the neighborhood.”

Anyone with information about the shooting is asked to submit an anonymous tip on cpdtip.com.