Zagreb-area radar and aircraft-disappearance claim — May 24, 1971

On May 24, 1971, at approximately 5:00 p.m., at Near Zagreb, Yugo, Cro, Former Yugoslavia, witnesses reported the following: 3 blips / military RADAR. 2 MIGs chase. All vanish entirely! Supporting case details: Reported craft or object: Craft / Vehicle Physiological effects: Physiological effects or injuries reported. Electromagnetic or instrument effects: Electromagnetic, vehicle, or instrument effects reported. Institutional response / aftermath: Military, Project Blue Book, government, or security-agency involvement is coded in the source metadata. Source comparison: The compressed source alleges radar returns, pursuit by two aircraft and disappearance. It supplies no witnessed removal or established abduction. CE1 applies provisionally to the observation; even the reported loss of the aircraft needs original documentation.