On September 1976 in Teheran, Iran an amazing event took place just after midnight. The Air Force from Iran received several UFO reports. The commander of the Air Force in Teheran, General Yousefi was a witness of the sighting and minutes after the F4 jet was sent to investigate the object.
This was one of the best documented UFO-aircraft incidents. Two U.S.-made F-4 Phantom II jet fighters of the Imperial Iranian Air Force were scrambled, but as the pilots closed in on the target, their communications and weapons systems were suddenly jammed. The incident was confirmed by high ranking officers of the Iranian Air Force and later documented by several agencies of the U.S. military.
Story goes: On September 19, four Tehran residents began telephoning the local Mehrabad airport stating that they saw a bright light in the sky. Mehrabad's radar was under repair and was not operational, so General Yousefi phoned Shahrokhi Air Force Base at Hamadan, 275 kilometers west southwest of Tehran. They showed nothing on radar. Yousefi went outside and saw the bright light for himself. He then ordered a McDonnell Douglas F-4 Phantom fighter plane, piloted by Lt. Yaddi Nazeri plus a backseat weapons officer, to have a look. It took off from Shahrokhi an hour later at 1:30am. Once Nazeri reached Tehran, he reported losing all instruments and communications, so turned around and returned to base, and reported that his instruments came back once he did so.
A second F-4 was launched at 1:40am, piloted by Lt. Parviz Jafari. Jafari acquired radar lock on the bright object at a range of 27NM. According to the F-4's radar, the object had a signature similar to that of a KC-135 Stratotanker. Jafari reported that its lights consisted of alternating strobes of blue, green, red, and orange, so fast that all four were visible at once.
The F-4 pursued the object to the south of Tehran. It dropped another bright object out, which Jafari believed to be heading straight for him, and he attempted to engage it with an AIM-9 Sidewinder infrared guided missile. But upon doing so, he lost all communications and his weapons console. He turned away, and saw the second object apparently rejoin and merge with the first object. Moments later another bright object came out and went straight down into the ground, leaving a bright trail, and lighting up a large 2-3 kilometer wide area.