An 18-year-old man was shot dead inside a Staten Island deli on Sunday night, police said.

The victim, identified as Keondre Adams, was shot in the chest inside What U Need Deli & Grill in New Brighton at about 5 p.m., according to the NYPD.

The teen was taken to Richmond University Medical Center and pronounced dead, police said.

It was unclear what led to the deadly shooting.

No arrests were made as of early Monday.