LAHORE: A man and his three sons were burnt to death after gas cylinder exploded as a truck collided with the rickshaw in Shad Bagh on Amir Road Lahore. According to local police, rickshaw driver Yaqoob, along with his family, was driving from Jallo when his vehicle collided with a truck. Gas cylinder installed in the rickshaw exploded, causing fire to erupt. As a result, Yaqoob and his three sons were burnt to death while his wife and sister in-law were severely injured. The injured were rushed to hospital for treatment.