Pretoria - More people are still believed to be trapped inside the two trains which collided in Mountain View, Pretoria, on Tuesday.
Metrorail spokesperson Lillian Mofokeng said they are prioritising the rescue mission to get to the trapped passengers. It is not clear how many people remain trapped.
"For now we don't have the full details of what caused the accident," she said.
So far three people have been declared dead and two are reportedly critically injured.
Both trains were from Mabopane station and heading towards Pretoria station.