Videos of small arms fire on US helicopters in Iran during the rescue operation for the downed F-15 fighter pilot have been recorded, showing officers and at least one civilian firing a shotgun.

US officials told NBC that two military helicopters came under light fire during the rescue operation. CBS, the BBC’s US news partner, said that the helicopter carrying the rescued F-15 pilot came under small arms fire and several crew members were injured, but the helicopter landed safely.

The search for the second occupant, a weapons systems officer, is continuing on both sides. The deputy governor of Kohgiluyeh and Boyer Ahmad said: “The efforts of law enforcement, security and public forces to identify and arrest the missing pilot are continuing.”

American sources say that all the injured troops have received first aid and will be transferred for further medical attention.

Images of the rescue operations in Khuzestan, Kohgiluyeh and Boyer Ahmad on the last day of the Nowruz holiday have been widely viewed and have provoked reactions from citizens.