A man died mysteriously on board an Islamabad-bound flight from Muscat, reported 24NewsHD TV channel on Monday.
The plane made an emergency landing at Karachi's JInnah International Airport after the death of the passenger.
The body was handed over to the staff at Karachi Airport.
The flight belonged to Oman Air which was travelling from Muscat to the Pakistani federal capital.
Reporter: Meraj Akhtar