JOHANNESBURG - City Power suspects a syndicate is behind the latest fire at its Central Substation.
The blaze broke out early on Saturday, leaving Marshalltown and surrounding areas without power.
It is the third fire to affect the Central Substation in a short space of time.
One suspect has been arrested while seeking treatment for severe burn injuries at Hillbrow Clinic.
He was admitted around the time the fire started, before being transferred to Chris Hani Baragwanath Hospital.
He remains under police guard and faces a criminal charge.