KARACHI - Additional Inspector General of Police, Karachi Javed Alam Odho on Monday announced a cash reward of Rs50,000 for a citizen who killed a robber and also appealed to the citizens to exercise caution in such incidents as their lives were precious.  According to Karachi Police spokesperson, three robbers were attempting to rob a citizen Shahid Nawaz, who in resistance opened fire on the robbers during which one robber was killed while two of his accomplices were arrested by the patrolling police.  Arrested culprits were identified as Kaleemullah and Raziullah. Police recovered illegal weapons and a motorcycle from their possession. The body of the robber was shifted to hospital and further investigations were initiated.