A "sinister force" was at work trying to destroy South Africa's commuter rail system, Transport Minister Blade Nzimande said on Monday.
In a statement, Nzimande condemned Sunday's arson attack at Cape Town station which resulted in two trains being destroyed by a fire.
"It is now undeniable that there is a sinister force at work trying to destroy our rail system," said Nzimande.
"It is also clear that this force is relentless and determined to reverse the [African News Agency] ANC government gains and efforts being made to modernise Metrorail service, particularly in the Cape Town metro corridor."
The minister called on law enforcement agencies to arrest the perpetrators.