THATTA: While the killing of five picnickers, among them two retired army officers, at the mausoleum of Noori on Saturday remained shrouded in mystery, Keenjhar police registered a murder case against unidentified people on Sunday.

Keenjhar SHO Javed Lakhair said an FIR had been registered on the complaint of Farhan Ahmed, brother of one of the victims, Sohail Ahmed.

Police released Gul Mohammed and two other people who had taken the deceased to the shrine in their motorboat. They are residents of nearby villages.

Police and other law-enforcement agencies are conducting separate investigations into the visit to the shrine by retired Maj Jahangir and Capt Bilal; Sohail Ahmed, an official of the KASB Bank; Mohammed Ali and Adnan Ahmed.

Mr Jahangir served as a Major of the Janbaz force, an airport radar security officer at Pir Patho and in Wana. His father Mehdi Akhtar had settled in the area after being allotted agricultural land in Mirpur Sakro in the ’60s as a retired army officer.

Initial police investigation suggested that all the men might have been seeking a metaphysical experience and one of them might have killed the others and then committed suicide. It said Mohammed Ali had been found holding a pistol.