11 Marines affected in hazmat incident at Fort Myer near Pentagon

Federal and military officials are investigating a hazmat incident that sickened 11 Marines at Joint Base Myer-Henderson Hall in Arlington, Virginia, on Tuesday.

The FBI and the Naval Criminal Investigative Service were called in when the Marine Corps personnel began feeling ill after an envelope containing an unknown substance was opened at the joint base, which is next to Arlington National Cemetery and near the Pentagon.

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Source: ABC News