Johannesburg: Robbers stealing masks from airports in South Africa have been shot by police.At Johannesburg Airport, gunmen entered the airport cargo and looted masks at gunpoint. Upon receiving the information, the police took immediate action and started pursuing them. Seeing the police coming, the accused opened fire in response to which the police also opened fire.Two robbers were killed and one civilian was injured in the firing. Police also arrested seven suspects during the operation. According to police, a large number of stolen masks and three crates of mobile phones were recovered from the truck seized from the accused.