NEW YORK (TIP): A police source said that a wedding guest’s gun went off accidentally at New York’s swanky Waldorf Astoria Hotel and four people suffered minor injuries from debris.

The incident happened last week in the Park Avenue hotel’s lobby.

A police official with knowledge of the investigation added that the wedding guest’s gun discharged and the bullet hit the floor. He spoke on condition of anonymity because the investigation was ongoing. He said that four people were hit by either shrapnel from the bullet or pieces of the floor. The shooter was placed under arrest.

A fire department spokesman said that the four victims were taken to hospitals with minor injuries.

The Waldorf Astoria is one of New York’s best-known hotels. It’s where the US president stays during the United Nations general assembly.