Metrorail said in a media statement about the incident on Tuesday evening that a train that pulled into the station around 7.40pm was already on fire.
"Fire services managed to contain the fire at 8.40pm after the electricity was switched off. Metrorail technical teams are on site to assess the damage and to commence cleaning up operations as soon as possible."
No injuries were reported.
Metrorail said platforms five and six would be closed until their safety had been assessed.
"Trains arriving and departing from these platforms will be reassigned to alternative platforms. Five other platforms, 12, 13 and 16-19, remain closed at the station as a result of previous fire damage."