A Miami-Dade Police bomb squad is at the Port of Miami's Cruise Terminal H at this hour, investigating a possible plastic explosive device found there.
One local media report indicates the device tested positive for C-4 explosive.
Royal Caribbean's Majesty of the Seas cruise ship is docked nearby, with 2,356 guests and 812 crew members due to leave later today on a five-day cruise.
Flight restrictions are also reported over the Port of Miami.
The U.S. Coast Guard is indicating the suspected explosive device was found on a package to be loaded on a cruise ship.
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