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Pretoria - The SA National Roads Agency Limited (Sanral) system was not affected by the evacuation of its operations centre in Centurion on Friday, it said.
“Another incident has occurred at the Central Operations Centre this afternoon. It should be noted that the system is fully operational and that only the call centre services are affected,” Sanral said in a statement.
Electronic Toll Collection, whose staff occupy the building, would issue a statement later.
Gauteng police said two people had to be quarantined after another anthrax scare at the operations centre.
“The Sanral offices were evacuated after an anthrax scare and we have specialists on the scene to see if the white powder found was anthrax,” said Lt-Col Katlego Mogale.
“Two people have been quarantined and taken to hospital.”
Mogale said more details were not available.
On Tuesday, Sanral said the Gauteng highway tolling system was disrupted when Sanral's operations centre in Pretoria had to be evacuated.
Spokesman Vusi Mona could not say how the system was disrupted.
“Our priority is to ensure the safety of the people who work at the central operations centre,” he said at the time.
The Tshwane hazardous material unit was called to the centre on Monday afternoon after a “suspicious envelope containing a white substance” was found on the premises.
This resulted in the shutdown of electricity and the evacuation of the building.
Mona said Sanral took the matter seriously and condemned this type of action because it was “tantamount to sabotage and borders on a very serious crime”.
On Wednesday, Sanral said the substance found in the envelope was not dangerous.
Thirty-seven people were decontaminated and hospitalised as a precaution. All of them had been discharged by Wednesday morning.
At the time, CEO Nazir Alli said the evacuation did not compromise the toll collection process and that the toll gantries remained operational.