On 29th April 1987, Wg Cdr Amjad Javed and Flight Lieutenant Shahid Sikandar, both from No.14 Squadron flying F-16As, were scheduled to fly an escort mission to the north, and on the same day they both escorted a PAF C-130 and a PIA Fokker to Chitral. On the way back the pair were vectored to Miranshah---2 adversary formations (4 aircraf each) were violating PAF airspace. They were told to engage, both aircraft were below JOKER. Initially vectored to 270, bandits were at 27,000 feet heading 090. The F-16As were at 6,000 feet at 600 knots, both zoomed to fire face shots with AIM-9Ls. Bandits turned north. The pair were in the TAC spread on No.2's right, bandits went saw the F-16s on their tails, No.2 switched lock to last bandit(MiG-23) which was at 4.1nm, negative ROC and called the leader. Leader didnt hear the call or misheard it, trying to radar lock to the rear left bandit, which in mistake was No.2, misidentified this locked aircraft was his own No.2. Leader switched from AIM-9L to AIM-9P, and hit No.2 as it went into a dive hitting the right wing. No.2 ejected around 29,000 feet almost 10 nm in Afghan territory. A search and rescue team picked up No.2 around 7 hours later, and No.2 was back at Kamra the same night, and was back flying F-16s 4 days later. However the issue was such a bizarre one, Leader unfortunately lost his job, and No.2 was posted out to PAF Academy(FIS/Sherdils 89, before coming back to No.14 in 1990 again on F-16s). 85726 F-16A was the aircraft that shot 85720 F-16A in this case of fratricide.
Hope this helps.
Regards.