Ex-Metrorail worker questioned over arson attack

A former employee has been taken in for questioning over the torching of 17 train carriages in Cape Town.

Fire and smoke damage at Cape Town Station following an incident of arson in April 2016. Picture: Aletta Harrison/EWN

CAPE TOWN - Acting Passenger Rail Agency of South Africa (Prasa) CEO Nathi Khena says police are still interrogating a former Metrorail employee in connection with the torching of more than a dozen train carriages in Cape Town.

The arson attacks all but completely paralysed the rail operator's services in the city, affecting tens of thousands of commuters.

Prasa says there's a R100,000 reward for any information that could lead to arrests.

Khena says he's been informed a former Metrorail employee has been taken into custody.

"The little information we have is that it was once our employee, or an employee of our service provider in the cleaning space."

WATCH: _Commuters face frenzied scrambles on crippled Metrorail lines _

Last week, arson, sabotage and intimidation resulted in severe delays and cancellations.

Metrorail says 17 carriages have been set alight in recent arson attacks.

The rail operator has also been battling cable theft, vandalism and an unprotected strike by South African Transport and Allied Workers Union workers.

LISTEN: _Metrorail infrastructure attacked... again _