Published: Jul 01, 2013 1:17 PM EDT

TAMPA, Fla. (AP) - Fifteen United States Postal Service employees in Tampa have been taken to a hospital after a package leaking a chemical substance was discovered.
Tampa Fire Rescue officials say the package was discovered Monday morning at the Ybor City Post Office.
It's unclear what kind of chemical leaked from the package. A hazardous materials team is investigating.
Officials say there was one person who touched the package then complained of mild irritation. Fourteen other postal workers also said they experienced some minor symptoms and everyone was taken to Tampa General Hospital.

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