Police and paramilitary troops surround a restaurant following a deadly attack on police officers in Karachi, Pakistan, Wednesday, Aug. 12, 2015. A police officer said gunmen killed several policemen at the roadside restaurant in southern Pakistan. (AP Photo/Shakil Adil)

Gunmen kill 4 police in southern Pakistan

KARACHI, Pakistan (AP) — Gunmen killed four policemen Wednesday in southern Pakistan, a day after the army said it had arrested a senior mem…