It was Karachi indeed.
As reported by avherald
A Saudi Arabian Airlines Airbus A330-300, registration HZ-AQI performing flight SV-891 from Lucknow (India) to Jeddah (Saudi Arabia), was enroute at FL380 about 270nm northeast of Karachi (Pakistan) when the first officer declared Mayday reporting the captain was incapacitated, the captain had fainted. The first officer requested all emergency equipment ready at the runway and also requested stairs available at the runway advising that he had no possibility to taxi the aircraft off the runway. The aircraft landed safely on Karachi's runway 25L about 45 minutes later.
Ground observers reported that an ambulance and medical assistance arrived only 20 minutes after landing.