It's time for the United States to hold Iran accountable.

A U.S. Navy ship fired warning shots at an Iranian ship in the Persian Gulf on Tuesday, U.S. defense officials confirmed to Fox News.

The U.S. Navy coastal patrol ship fired warning shots from its .50-caliber machine gun at an Iranian patrol boat when it came within 150 yards of the ship in the Persian Gulf, according to two U.S. defense officials.

The Iranian ship ignored repeated radio calls from the USS Thunderbolt, which also launched flares to warn the fast approaching Iranian ship, officials said.

The incident happened Tuesday as a formation of U.S. Navy warships was doing an exercise in the Northern Persian Gulf.

It’s the first time since January a U.S. Navy warship has fired warning shots at an Iranian vessel which approached too close.

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