At least four people were injured, none seriously, when a gun accidentally discharged during a wedding party Saturday night at the Waldorf Astoria hotel in midtown Manhattan, police said.

A guest had a gun in his pocket that went off in the hotel's Park Avenue lobby, a police source said. Manhattan Chief of Detectives William Aubry said the incident happened about 7:30 p.m.

A woman was grazed in the head. Three other people were injured by fragments of marble, glass or tile that kicked up, Aubry said.

An FDNY spokesman told The Associated Press the four victims were taken to hospitals with minor injuries.

A female guest who did not want to named said the man with the gun was sitting down and adjusting his trousers when the gun went off. Besides injuring the other guests, it blew a hole in his pants.

Three people were being questioned at the Midtown North Precinct, Aubry said, and police were examining security videos that may have captured the shooting.

The shooter was placed under arrest, the AP reported. He was not immediately identified.

advertisement | advertise on newsday

Police declined to identify who had the gun and did not immediately say whether it was legal.

Hotel visitors said wedding guests, including many women in long gowns, milled around after the shooting to see if the affair would resume. The bride and groom, both in their 20s, did wed.

The Waldorf is one of the city's most famous hotels, an art deco landmark with more than 1,400 rooms.

John Asbury, Joan Gralla, Anthony M. DeStefano