A Police constable, Syed Karim, and a passer-by, Abdur Rehman, were killed when unidentified assailants opened fire at a Police check post in Shalobar area of Tirah tehsil (revenue unit) of Khyber District in Khyber Pakhtunkhwa in the morning of July 16, reports The Express Tribune. The attackers managed to escape after committing the crime.