KARACHI - Bomb hoax created panic at a government hospital. According to police, an unknown caller informed at 15 police helpline about the bomb fixed inside the Sindh Government Qatar Hospital situated at Orangi Town. He said that the bomb would be exploded within fifteen minutes. Thereafter police along with the bomb disposal squad reached at the spot and evacuated the hospital staff and patients, and started search operation for around an hour and cleared the building from any risk. Meanwhile, police arrested two culprits from Punjab involved in the killing of two policemen. Special Investigation Unit Jamshaid Town went to Lahore on a tip off and arrested two culprits including Khalid Khan and Safdar who had killed two police personnel in an encounter at Model Colony couple of months ago. The police also recovered the snatched SMG rifles, a TT pistol and a stolen car (AFY-666) from the possession of culprits.