JOHANNESBURG - City Power officials are investigating the cause of a fire at a central Johannesburg building.
One of four transformers is believed to be the cause of the blaze on Plein Street.
Firefighters have been battling the fire since the early hours of this morning.
READ: Joburg CBD building evacuated after transformer blast sparks fire
Joburg Emergency personnel and police are on the scene.
"We don’t know the amount of damage to the cables," said City Power spokesperson Isaac Mangena.
"Several customers will remain off until repairs are done and electricity restored."