2 Pakistani police officers guarding polio workers killed by suspected militants

Suspected militants riding a motorcycle shot and killed two police officers assigned to protect polio workers during a door-to-door vaccination campaign on Tuesday in northwestern Pakistan, officials said. The drive-by shooting in Mohmand, a district in Khyber Pakhtunkhwa province that borders Afghanistan, also wounded a third officer. The police officers were travelling to a nearby village to guard vaccination teams…