QUETTA - A police constable was killed and 16 others including children were wounded in a suicide bomb attack on the residence of Deputy Inspector General (DIG-Investigation) Wazir Khan Nasir at Gulistan Road here within the limits of Quetta Cantt on Thursday morning. Wazir Khan Nasir, his three children and servants were amongst the injured. The blast badly damaged houses, official buildings and several vehicles. According to officials, a suicide bomber driving an explosive-laden vehicle first opened fire on police constable identified as Nasir Khan deployed at the house of DIG-Investigation located at Gulistan Road near Police Lines and then rammed the vehicle into the gate. As a result, police constable and alleged suicide bomber died on the spot while 16 others, including Wazir Khan Nasir, his son Zubair and two young daughters sustained minor injuries. The injured were immediately shifted to Combined Military Hospital where the condition of injured is stated to be out of danger. Some other injured were identified as Muhammad Ghafoor, a passerby Jahangir Khan, Musa Khan, Azad Khan, Amir, Hafizullah, Sahi Khan, Rehana Bibi, Amra Bibi, Abdul Waheed, Arslan, Saadia Bibi and Shaukat. 'The target of suicide explosion was Wazir Khan Nasir while the police constable tried to stop the driver of the explosive-laden car who wanted to enter into DIGs house, but hit the outer wall of the residence, Daud Junejo, the Capital City Police Officer told the newsmen on the spot of the blast. He said that unfortunately the constable lost his life in the suicide blast while 13 others received injuries, including minor children. The blast was so powerful that it badly damaged two houses and several vehicles and left a deep crater in the area. The blast also damaged nearby buildings, including State Bank. It may be mentioned that where the blast took place is one of the highly guarded security zone area where State Bank, IG police office, Govt Girl High School and other official buildings are located. The blast sent a wave of panic and fear amongst the people. 'I was passing through the area and saw that one vehicle rammed into a gate and later on a huge blast occurred, an eyewitness told media persons. Soon after the blast police and other law-enforcement agencies rushed to the site and cordoned off the area. 'Four mortar shells were also recovered from the blast site while body parts of the suicide bomber have been collected and investigations are underway into the incident, a senior police official told this scribe. An official of Bomb Disposal Squad said that 100kg explosive material was used in the blast. This was the first time that a suicide bomber was used against a senior police officer as in past remote control bomb and armed attacks were made against police officials and their responsibilities were claimed by banned Lashker-e-Jhangvi and Sipah-e-Sahaba. Chief Secretary Balochistan Ahmed Bakhsh Lehri and DIG Quetta Operation also visited the blast site. Sources said that DIG-Investigation Wazir Khan Nasir had been receiving threats from different banned outfits and he was the main target of the attack. Chief Minister Balochistan Nawab Muhammad Aslam Raisani strongly condemned the suicide attack and visited CMH where he inquired about health of Wazir Khan Nasir and other injured and directed doctors for utilising all resources for treatment of the injured. No group has claimed responsibility for the attack so far.