With Donald Trump scheduled to arrive in Palm Beach County on Friday, U.S. officials are reportedly keeping an eye on a Russian spy ship that was spotted about 150 miles off Florida heading toward the Caribbean on Thursday, according to Fox News.

Related: Trump to speak to Republican donors during weekend visit to Palm Beach

It's the same ship, the Viktor Leonov, that was seen "loitering" off the Virginia coast last month, Fox News says. It's not unusual for such ships to patrol in international waters around the world, according to New York magazine.

The same ship was in Havana Harbor in January 2015 when relations with Cuba were eased. Earlier this year, it made a stop in Jamaica after leaving its home port near Norway around New Year's Day, the Fox News story says.

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The Victor Leonov is equipped to intercept communications and analyze U.S. Navy sonar capability, but that's "similar to operations we do around the world," a Pentagon spokesman said last month.

The White House has not confirmed when Trump will arrive at Palm Beach International Airport, though a temporary FAA flight restriction over Palm Beach County begins at 3:30 p.m.