A 24-year old man shot in his head in an East Harlem liquor store died on Tuesday night, police reported.

At about 9:40 p.m., when an altercation broke out, according to preliminary details gathered by police, the victim was with a party at R&C Wine & Liquor on East 111th Street near Madison Avenue.

"Within a minute, it happened so quickly," said 30-year-old Yi Shy, who was working in the shop when the shots rang out.

As a group of six or seven people strolled in and "started fighting... pushing each other," the staffer was helping out a client, he recalled.

Then there was a sound of shooting and everyone began to run out," said Shy, including the victim, who apparently collapsed somewhere outside."

He was discovered by police with a gunshot wound to the head. He was taken to Harlem Medical Center and pronounced dead, the NYPD said.

The victim wasn't found right away. As of late Tuesday, no arrests had been made.