A security guard was killed and two others received injuries as a result of a suicide blast at the entrance of a bank in I-8 Markaz here on Monday, Inspector General of Police Wajid Ali Durrani said. Talking to mediamen at the site of blast, the IGP said the head of bomber had been recovered. The bomber seemed to be 20-year old. The IGP and other senior officials of police and district administration supervized the rescue operation. According to the police, the security guard namely Muhammad Bashir tried to stop the bomber from entering the bank without caring for his life. His sacrifice saved many others who were present in the bank at that time. The IGP said, The bomber tried to enter the bank and blew himself up when the security guard did not allow him to do so without search and screening. Senior Superintendent of Police Tahir Alam Khan told newsmen that after receiving information about the blast, rescue teams of police and Rescue-1122 reached the site within few minutes and started rescue operation. The entire bank staff excluding the security guard and two others who sustained injuries, remained safe. The police cordoned off the entire area of the blast site, the SSP said. It may be mentioned here that a number of motorbikes parked in front of the bank were badly damaged.