Johannesburg - Mall of Africa's management said on Monday police had increased their presence after two men were killed in a shooting incident outside the Midrand mall.Mall of Africa's brand manager Vanessa Fourie said they were working closely with the South African Police Services (Saps)."They have increased their manpower not only within the mall but more importantly, in those areas that have been identified as hotspots within the area and surrounds," Fourie said.The incident happened on Sunday evening.Lieutenant-Colonel Lungelo Dlamini said the two men had been standing on the pavement in the taxi rank when they were approached by men in a white VW Polo."The two deceased were approached by unknown suspects in the vehicle. They asked for directions and while they were being guided to their destination, they produced firearms and started shooting," he said.The men died at the scene and the gunmen fled the taxi rank.Dlamini said the motive for the attack was unknown."The Mall of Africa's top priority is the safety of their customers and employees, and we will take whatever measures are deemed necessary to ensure this," Fourie said.She said they had provided working space at the mall for the ongoing Saps operations.No arrests have been made.