Three bartenders were arrested Saturday night in Kings Park, accused of selling alcohol to underage people.

Suffolk police say there were more than 200 underage customers at Celtic Crossing Tavern around 10 p.m.

The bartenders, Colin Treacy, 19; Stephen Carini, 19; and Ashley Sandvik, 21, were charged with several counts of unlawful dealing with a child and selling alcohol to a person under 21.

Police say “a loaded shotgun was recovered from the establishment.”

The Smithtown fire marshal issued 10 code violations and closed the tavern. It will stay closed until the building is re-inspected.