Karachi: A Pakistan Navy official on duty shot himself in the head with his service rifle on Wednesday morning after murdering his wife at their home in the sprawling city, officials said.

Police sources said Syed Safdar Ali reported to duty and called his uncle to tell him that he had killed his wife Zeenat and was going to commit suicide. After the phone call, Ali pointed the barrel of his official rifle below his chin and shot himself.

Ali, 25, took his life in the changing room at the periphery of the mausoleum of Mohammad Ali Jinnah, the founding father of the nation. Ali’s job was to guard the mausoleum.

The police later found the body of Zeenat, who was strangulated. Sources said that the couple lived in Shanty Nagar, a slum area in eastern Karachi. Police are yet to ascertain a motive behind the murder-suicide.

Both the bodies were brought to the state-run Jinnah Post Graduate Medical College for an autopsy.

In another similar incident, a man strangled his wife on Tuesday night in the Korangi district, eastern Karachi. Police said that Sajid allegedly strangled Nadia, 22, at their home and then dropped their two-year old daughter off with a relative in a neighbourhood in western Karachi.

He later went back home and neighbours informed the police about the murder after which he was arrested. Police said that it might have been an honour killing.