South African police said on Friday they are investigating a case of arson and murder after they found four Chinese nationals burned down inside their shop in Ganyesa in the country\'s North West province. Brig Thulani Ngubane, police spokesman in the province, said the victims were found at about 02:00 a.m. on Friday He said the four Chinese nationals, three males with the age of 19, 25, 35, and one female of 25, were inside their Ganyesa Fruit and Vegetable shop when they woke up and realized that they were trapped inside a burning shop. They tried to escape the fire by opening a window but did not succeed because of burglar bars. \"One of the deceased called the police to inform them on what was happening and the police rushed to the scene,\" Ngubane said. When police arrived they found that the shop was completely burned down with the four Chinese nationals inside. \"The cause of the fire is still unknown at this stage,\" Ngubane said.