Police on Sunday said a bomb blast at a market in a northwest Pakistani city wounded at least 20 people.
The explosion occurred in Dera Ismail Khan, a rough and tumble town not far from Pakistan's tribal belt.
Police officer Bahawal Khan said Sunday that it was not clear if a suicide bomber was involved. A police checkpoint was also nearby.
The explosion came as intelligence officials confirmed a suspected US missile had killed five people in the adjacent South Waziristan tribal region.