Five children dies after becoming locked in deep freezer.

The bodies of the children, aged between three and seven, were found by their grandmother around 6pm on January 19 in the South African agricultural town of Kakamas, Northern Cape.

Police allegedly believe the children, who were all cousins, became accidentally trapped during a game they were playing.

The freezer became locked and the children suffocated inside, a police spokeswoman said.

It was unclear whether the freezer was switched on at the time the incident took place but all three children were dead for sure.