A powerful blast rocked Afghan Taliban birthplace Kandahar in south Afghanistan Sunday morning, killing three persons and injuring two others, police said. "The blast occurred in Khawja area of Kandahar city at 08:30 a. m. local time as a result two police and a civilian were martyred," provincial police chief Sardar Mohammad Zazai told media. One police and one civilian sustained injury in the blast, he further said. Meantime, a doctor in Mir Wais hospital in Kandahar city the capital of Kandahar province confirmed that so far two dead bodies including one police have been taken to the hospital. Officials put the attack on the enemies of peace, a term used against Taliban militants but the outfit has yet to make comment. Taliban fighters have vowed to speed up activities this year in Afghanistan.