Suicide bomber kills four Pakistani policemen

ISLAMABAD, Aug 26 (Reuters) A suicide bomber in a car killed four policemen and wounded two in an attack in northwestern Pakistan today, police said.

Violence has escalated in Pakistan since a peace deal with tribal fighters linked to the Taliban and al Qaeda broke down in North Waziristan, and after the army assaulted a militant mosque in the capital, Islamabad.

Senior police officer Mohammad Iqbal in the northwestern town of Swat told Reuters the bomber was travelling in a car and blew himself up when police stopped him at a checkpost.

''He broke a police cordon-off and then he blew himself up when he was stopped at another checkpost,'' Iqbal said.

He said four policemen were killed and two wounded in the attack.

REUTERS MS RAI2016