A man was punched to death while attempting to break up a brawl outside of a Bronx deli, police said Friday.

The 57-year-old intervened in a fight on the sidewalk in front of 5 East Mt. Eden Ave. in West Concourse at 1:20 a.m., police said.

Chief of Detectives Dermot Shea told reporters the attack began as a fight between two people inside the bodega.

“When they step out of the bodega, there is a third, uninvolved person that attempts to intercede and one of the two guys [partaking] in the fight turns and strikes with a punch,” Shea said. “He goes down, strikes his head on the sidewalk.”

The victim suffered severe head injuries after falling to the ground and was transported to Bronx-Lebanon Hospital where he died, cops added.

The identity of the victim is still pending family notification.