At least seven persons, including a district intelligence chief, were killed in a Taliban attack in Afghanistan's Sari Pul province on Monday, a local official said."Sharraf Uddin, intelligence chief of Sangcharak district, was killed along with his deputy and three security force members following a militants' attack on Monday afternoon," an official told Xinhua. A local leader, accompanying the targeted officials, and a child were also killed in the gun firing, he added. Taliban insurgents claimed responsibility for the incident.