A fire has ripped through the old post office in Rissik Street in the Johannesburg city centre.

The blaze broke out inside the historic building on Sunday night firefighters took up to five hours to extinguish the blaze.

The building, which is over 100 years old, has been in a state of disrepair for several years now following incidents of vandalism.

"No one was injured and our fire safety offices will be doing investigations to find out what caused the fire," said Johannesburg Emergency Services’s Nana Radebe.

This is the second fire at the post office in recent months.

In September, the City of Johannesburg called for proposals for the development of the building.