DERA ISMAIL KHAN: At least nine people including four policemen were killed and scores of others were injured in shooting and blast attack in Dera Ismail Khan, ARY News reported on Sunday.<br /><br />A suicide blast at District Headquarters Hospital Dera Ismail Khan also injured 15 people.<br /><br />At least two policemen were martyred when armed terrorists opened fire at a check post in Dera Ismail Khan district. According to reports, incident took place at Kotla Syedan police post in DIK district.<br /><br />A bomb device exploded at the gate of District Headquarters Hospital DIK when the dead bodies of the deceased policemen were being transferred to the medical facility.<br /><br />Overall nine people including four policemen were killed in twin terror strike.<br /><br />The explosion at the hospital gate is said to be a suicide attack.<br /><br />Police and relief workers rushed to the hospital after the blast and security men cordoned off the premises.