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MIDDLETOWN TOWNSHIP, New Jersey (AP) -- The U.S. Navy says an explosion at a New Jersey base has injured eight employees, one seriously.

The Navy says the blast happened inside a boathouse on Weapons Station Earle, N.J. as workers were doing boat maintenance Tuesday morning.

One sailor has been hospitalized with serious injuries. Seven other workers sustained minor injuries, mostly smoke inhalation.

The Navy says no ammunition was involved in the explosion.

The cause is under investigation.

Naval Weapons Station Earle's mission is to provide Fleet operational services and infrastructure management to support Combat Logistics Force homeporting, ordnance functions, and tenant activities in execution of the National Military Strategy. AP-WF-08-20-13 1513GMT

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