Iranian drone came close to a US fighter jet that was landing on a supercarrier in the Persian Gulf. The drone came within 100 feet of a US F-18 jet that while it was attempting to land on the aircraft carrier Nimitz, CNN reported on Tuesday.

The broadcaster said the US aircraft, which had been some several thousand feet off the deck, had to take an evasive maneuver. Officials, cited by CNN, described the UAV’s movements as unsafe. The US side used an emergency radio frequency to warn the operators of the drone, which was not armed, to withdraw the vehicle.

The incident comes after a series of confrontations between US and Iranian vessels in the Persian Gulf.