Suspected militants riding on a motorcycle shot and killed on Wednesday a police officer assigned to protect polio workers in a region in northwestern Pakistan bordering Afghanistan, the latest in a string of deadly attacks on polio workers.
The attack in Bajur, a district in the Khyber Pakhtunkhwa province and a former stronghold of the Pakistani Taliban, came just days after authorities launched the vaccination drive. Police official Nasir Khan said an investigation was underway.
