Earlier in the morning, two police vans were on their way to provide security to polio teams when they were targeted on the Kari Kot road in Rustam bazaar area of South Waziristan, police sources told Dawn News.
An improvised explosive device was used during the attack.
Medical superintendent of Wana district headquarters hospital Dr Hammad Mahmood confirmed to Dawn that six policemen and seven civilians were among the injured. He said one of the injured was in critical condition.
Pakistan is witnessing a spike in terrorism-related activities in recent months.