Durban - A cash-in-transit security guard was killed during a business robbery in Mariannhill on Thursday.The murder at the Boxer Punch store set off a string of events, including a dramatic shootout and high-speed chase of the gang of robbers.Hawks spokesperson Captain Simphiwe Mhlongo said two guards had been accosted by gunmen while they were loading cash into an ATM."We can confirm that Hawks members are investigating the case of armed robbery, murder and attempted murder which happened [in the] Mariannhill area," he said. "The suspects fired shots towards the security guards. A 39-year-old security guard was fatally wounded and one bystander was injured during the shootout."Mhlongo added: "The suspects took an undisclosed amount of cash and fled the scene. Two getaway vehicles were later found abandoned at Dassenhoek area. No arrest has been made at this stage."R5 rifles and AK47'sAccording to a police source with knowledge of the investigation, who spoke on condition of anonymity, the gang had engaged security guards in a gun battle at the store.Using automatic rifles, the gang unleashed a volley of shots at security guards before they fled.In the course of their escape, they were pursued by another security officer.When they realised they were being followed, they stopped their vehicles in the middle of the road and opened fire on the guard.They then ran away and remain at large.Cartridges from R5 rifles and AK47s were found at both scenes.