Gunmen kill two policemen escorting polio workers in Pakistan

PESHAWAR: Gunmen riding on motorcycles opened fire on Tuesday on police escorting a team of polio workers in northwestern Pakistan, killing two policemen, authorities said.
None of the polio workers were harmed, said Mohammad Imran, a local police official. The four polio workers and their police escort were all traveling on motorcycles.
The assailants fled the scene and no one immediately claimed responsibility for the attack in the town of Gomal, in Khyber Pakhtunkhwa province bordering…