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(The Associated Press circulated the following story on July 5.)

WASHINGTON, D.C. — An Amtrak train bound from Miami to New York was halted in Washington for more than an hour Saturday as authorities investigated a possible threat.

Train 92, the Silver Star, left Miami at 10:30 a.m. Friday, according to The Associated Press.

Amtrak spokeswoman Vernae Graham said graffiti found at the Amtrak station in Orlando that day prompted security officials to stop the train when it arrived at Washington’s Union Station on Saturday afternoon.

Graham said she could not confirm media reports that the graffiti was a message in Arabic that referred to Washington and the Fourth of July.

More than 160 passengers were taken off the train as canine units inspected the cars.

Nothing suspicious was found, and no one was arrested.

Passengers were allowed to reboard the train after about 80 minutes.