Videos and images of a damaged Bree Street in the Johannesburg CBD started doing the rounds on social media on Wednesday afternoon.
An official notice sent to community police forum groups said that an explosion had occurred, “possibly on the gas lines underground”.
Images from the scene showed how the road had been severely damaged, with tar ripped up. Several vehicles, including taxis which usually park along the busy public transport route, were damaged.
It was not immediately clear whether there were any injuries.
Watch the videos below
This is a developing story