Iran said it had not had a confrontation with the United States Navy in the Gulf, official news agency IRNA reported Friday night, dpa reported.
IRNA quoted an Iranian Navy spokesman as saying there was no confrontation between Iranian boats and a US vessel in the Gulf.
The US Navy had said Friday that a contracted cargo vessel had fired warning shots on two small boats that approached the ship in the Gulf and failed to respond to radio communications.
An Iranian Navy official told IRNA that no such an incident took place.
Tehran had also denied reports about a similar incident earlier this month between three Iranian speedboats and the USS Typhoon in the Gulf, saying that in that case there had just been routine radio contact between the two sides.