Johannesburg - Four men were found dead inside a car in what appears to have been an accident in Snake Park in Dobsonville, Soweto, Gauteng police said on Monday.Warrant Officer Kay Makhubela said the four were found trapped inside a car on Sunday."It appears the car hit rocks before it crashed into a tree," he said."They were declared dead at the scene. It is not clear what caused the car to hit a tree; we have opened a culpable homicide case."He said post-mortems would be conducted to determine the cause of death.In a separate incident a man was found dead with an open wound in his upper body in Braamfischerville, also in Dobsonville.Makhubela said the man's cousin found him on Sunday."We have opened a murder case and no arrest has been made."