The suicide bomber also wounds dozens . He rides up to a security checkpoint on a motorbike . A man in the car behind him is killed instantly, but he manages to get out and detonate his explosives at the checkpoint before anyone can stop him. It is near the border with Afghanistan and rife with Islamist extremists .
The suicide bomber also wounds dozens . He rides up to a security checkpoint on a motorbike . Peshawar is adjacent to Pakistan 's restive tribal region in the northwest . It is near the border with Afghanistan and rife with Islamist extremists .