A former driver for the Railway Safety Regulator has turned whistleblower, claiming that his former bosses told him to lie to investigators from the office of the public protector.

As the public protector continues its investigation into a host of allegations against the regulator, which monitors railway safety standards, the driver has emerged with an affidavit in which he makes damning accusations against his former employer.

In March 2014 the public protector informed the regulator that it was investigating allegations against it. One of the allegations was the “unauthorised use of RSR vehicle to deliver anti-Magashule T-shirts in Welkom”.

The Mail & Guardian was unable to confirm whether this was a reference to Free State Premier Ace Magashule.

The driver says he handed his affidavit to the regulator’s board members two years ago and that an official from the department of transport requested it two weeks ago.