A bomb ripped through a van in Peshawar on Wednesday, killing nine people and wounding more than 20, police said. Officers said it was not immediately clear whether the bomb was planted in the van or at the roadside. "According to initial reports, nine people were killed and 22 were injured in the blast," senior police official Tahir Ayub told AFP. Peshawar is the main city in Pakistan's restive northwest, in whose lawless tribal areas bordering Afghanistan, Taliban and Al-Qaeda militants have strongholds, and bomb attacks are common. A bomb in a pickup truck tore through a market in a Peshawar suburb on August 31, killing 12 people and wounding 12 others.