This is the third incident of trains being set alight in the past eight days.
Last Saturday, seven train carriages were destroyed, others damaged, and station infrastructure was also damaged when two trains caught alight at platforms 15 and 16 at Cape Town Station.
Several carriages were also reportedly damaged when a fire broke out on a train at Retreat Station on Thursday.
WATCH: Video by Quinton Mtyala
The United National Transport Union (Untu) said the same method was used for all previous arson attacks.
The South African National Civic Organisation (Sanco) has blamed sinister forces for the "deliberate acts of sabotage".
”We are inclined to believe that these are deliberate acts of sabotage that are relentlessly pursued by sinister forces determined to halt train services at all costs irrespective of the inconvenience that this will have on business and commuters,” Sanco national spokesman Jabu Mahlangu said earlier this week.
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IOL and ANA