PHILADELPHIA (CBS) — Police are investigating the shooting death of a 22-year-old man in North Philadelphia on Wednesday evening.

The incident happened around 7:05 p.m. Thursday inside a corner grocery store in the 3300 block of North 6th Street.

Police say a 22-year-old man was shot about 20 times at point blank range after eating a sandwich in the store.

No one else in the store was hurt.

Detectives are trying to find two masked gunmen.

Anyone with any information is asked to call police at 215-686-TIPS.