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WEST PALM BEACH, Fla. (CBSMiami/AP) — A suspicious bag at Palm Beach International Airport prompted authorities to briefly close a concourse.

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The Transportation Security Administration says Concourse C at the airport was closed for a short time Thursday as authorities tested the bag for TNT, which is the active ingredient in dynamite.

Airport officials say TSA agents were screening a piece of luggage around 6 p.m. for a departing flight when an agent noticed something suspicious.

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Officials say the bag was turned over to hazmat and bomb squad officials with the Palm Beach County Sheriff’s Office.

The concourse later reopened around 7:30 p.m.

Flights from JetBlue and Delta were delayed as a result of the security alert. A spokesman with the administration says Concourses A and B were not affected.

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redistributed. The Associated Press contributed to this report.)