Unidentified gunmen have shot dead two military and a senior police officer in northern area of Pakistan, police said on Tuesday.

A Pakistan Army Colonel, Captain and Senior Superintendent Police (SSP) were killed as their convoy came under attack in Chilas area of Gilgit-Baltistan late Monday, state radio quoted police sources as saying.

A police officer said SSP, Hilal Ahmed and the army officers were returning to residences from an official meeting when unknown gunmen opened indiscriminate fire at their convoy, radio Pakistan reported.

Four officials were injured and were taken to a nearby hospital for treatment. However Pakistan Army’s Colonel Mustafa Jan, Captain Ashfaq and SSP Hilal Ahmed died of wounds.

One more army personnel also sustained injuries and is being treated at the hospital.

The gunmen escaped after the shooting while taking advantage of the darkness.

No group claimed responsibility for the attack. The authorities routinely blame militants and banned sectarian groups for attacks on security officials.

Official sources said that the slain army colonel Mustafa Jan was recently deployed at the northern areas for investigation into the attack on foreign climbers in June.

Militants had stormed a camp of foreign mountaineers and had killed at least 10 foreigners.

The Pakistani Taliban had claimed responsibility and its spokesman had stated that the attack was revenge to the killing of its people in the American drone strikes.

The police had earlier claimed arrest of the militants involved in the attack. However, the authorities are silent about any arrest.

Meanwhile, Gilgit-Baltistan Chief Minister Mehdi Shah condemning the attack expressed solidarity with the family members of slain security officials.

The chief minister also directed the police and security personnel to immediately arrest the culprits.