Investigation into PNS Mehran Base attack has been completed and court-martial has been recommended against three senior naval officers, a private TV channel reported on Wednesday, quoting military sources. The action is being taken on the recommendation of the Inquiry Board, headed by Admiral Tehseen Ullah. Authorities had initiated court-martial against Commanding Officer Mehran Base Captain Israr, Naval Aviation Commander Commodore Tahir and security officer Mehran Base Lieutenant Commander Ibrar. At least 12 personnel were killed and an Orian surveillance aircraft destroyed when terrorists attacked the naval airbase on May 22. Staff Reporter from Islamabad adds: Pakistan Navy is all set to take punitive action against some officials in the light of recommendations of the Board of Inquiry (BoI) ordered into terrorist attack on PNS Mehran on May 22. Some action will be taken in the light of recommendations of the Board of Inquiry, Pakistan Navy spokesman told TheNation on Wednesday. It was the biggest attack on the Pakistan Navy and its assets since 1971, in which dozens of people including PN personnel and terrorists were killed.