An off-duty officer on Staten Island fatally shot a man who was pointing what appeared to be a real firearm, police said.

Jesse Campbell, 44, had a lengthy rap sheet of at least 22 arrests, including one for assaulting police, law enforcement sources said.

A man was shot multiple times by an off-duty NYPD officer near a Staten Island diner, according to police. Just after 8 p.m. Friday, a man believed to have a gun was said to be behind Andrew’s Diner on Hylan Boulevard near William Avenue in Great Kills,