The TSA checkpoint at MacArthur Airport was shut down early Wednesday morning due to a suspicious item found by TSA agents.

Islip Town officials tell News 12 that a belt buckle resembling a grenade in a carry-on bag looked suspicious, so TSA agents decided to shut down the airport to investigate a little after 5 a.m.

The security checkpoint was shut down for about 30 minutes while the Suffolk County bomb squad was called in. They eventually determined the item to be safe.

Three flights were delayed while TSA investigated the item.

The passenger who brought the belt buckle was questioned, but eventually boarded his flight on Frontier Airlines.

Town officials say the belt buckle was confiscated and no charges were filed.

Islip Town Supervisor Angie Carpenter has since released a statement that reads, "We at the Town of Islip want the public to be comfortable knowing that we operate with an abundance of caution guarding the safety of our ISP passengers."

The airport is now operating normally.