WASHINGTON (AP)--In what is being called a serious provocation, Iranian Revolutionary Guard boats harassed and provoked three U.S. Navy ships in the strategic Strait of Hormuz, officials said Monday.
U.S. forces were on the verge of firing on the Iranian boats in the early Sunday incident, when the boats ended the incident and turned and moved away, said a Pentagon official.
"It is the most serious provocation of this sort that we've seen yet," said the official, who spoke on condition of anonymity because he was not authorized to speak on the record.
The incident occurred at about 5 a.m. local time Sunday as a U.S. Navy cruiser, destroyer and frigate were transiting the strait on their way into the Persian Gulf.
"Five small boats were acting in a very aggressive way, charging the ships, dropping boxes in the water in front of the ships and causing our ships to take evasive maneuvers," the Pentagon official said.
"There were no injuries but there very well could have been," he said, adding that the Iranian boats turned away "literally at the very moment that U.S. forced were preparing to open fire" in self defense.
He said he didn't have the precise transcript of communications that passed between the two forces, but the Iranians radioed something to the effect that "we're coming at you and you'll explode in a couple minutes."
According to a report on the Cable News Network Web site, U.S. military officials said the five Iranian ships made "threatening" moves - in one case coming within 200 yards of a U.S. ship.
CNN reported that when the U.S. ships heard the threatening radio transmission, they manned their gun positions and officers were "in the process" of giving the order to fire when the Iranians abruptly turned away, the U.S. officials said.
It said no shots were fired and no one was injured in the confrontation.
One of the Iranian ships had been dropping white boxes into the water in front of the U.S. ships, CNN reported, citing the U.S. officials.
Historical tensions between the two nations have increased in recent years over Washington's charge that Tehran has been developing nuclear weapons and supplying and training Iraqi insurgents using roadside bombs - the No. 1 killer of U.S. troops in Iraq.
In another incident off it's coast, Iranian Revolutionary Guard sailors last March captured 15 British sailors and held them for nearly two weeks.
The 15 sailors from HMS Cornwall, including one woman, were captured on March 23. Iran claims the crew, operating in a small patrol craft, had intruded into Iranian waters - a claim denied by Britain.