According to the BBC, Pakistani police killed in suicide bomb attack:

A suicide bomber has killed at least eight policemen in Pakistan’s volatile tribal area on the border with Afghanistan, officials say.

The attacker rammed his explosive-laden car into a police vehicle travelling on a highway in the Khyber area.

At least five civilians were also killed in the blast, the officials say.

No group has yet said it carried out the attack. The region is well known as a stronghold of militants linked to the Taliban and al-Qaeda.

The officials said the policemen were on a routine patrol when the suicide bomber attacked them.

Several other vehicles were damaged by the force of the blast.