The death toll in the suicide attack targeting one of Pakistan's oldest and most revered Sufi shrines in Lahore has risen to 13 as another civilian succumbed to his injuries, a media report said on Monday.

Tahir Aslam, 18, was working at a shop near the shrine. He was among the critically injured and was brought to the Mayo Hospital where he has succumbed to his injuries. He was rushed to the hospital after the blast which has claimed the lives of six policemen and seven civilians, the Dawn newspaper reported.