A New York City Police officer was suspended without pay Monday following his arrest Sunday on charges that he pointed his gun at a group of passengers on a Long Island Rail Road train while off duty, law enforcement officials said Monday.

Officer David Hendrick, 38, of Brentwood, pleaded not guilty Monday in Nassau District Court in Hempstead to charges of second-degree criminal possession of a weapon, a felony, and second-degree menacing, a misdemeanor.

He was held on $2,500 bond or $1,000 cash.

If convicted, Hendrick faces a maximum of 15 years in prison.

Nassau District Court Judge Andrea Phoenix issued orders of protection for the four passengers. Hendrick's attorney, Stephen Worth, of Manhattan, did not return a call for comment.

According to MTA Police, Hendrick was riding a Ronkonkoma-bound train that left Penn Station at 9:17 p.m. Sunday, MTA police said.

MTA police said Hendrick was attempting to quiet down a group of unruly passengers on a train containing several hockey fans returning from a New York Rangers game at Madison Square Garden.

MTA and Nassau police removed Hendrick from the train at the Mineola station and arrested him, MTA police said.

The train was delayed for nearly a half-hour at the station.