Gas, a spark and a confined space could have created the Joburg CBD blast
Authorities believe the cause of the Johannesburg CBD explosion was igniting a mixture of gas from methane, natural gas, and a commercial gas line within the storm water system.
One person died, and 48 others were injured during rush hour on Wednesday evening when the tar beneath them exploded along a 400-metre line in the road.
Authorities have been on the scene, which resembles an earthquake faultline in Lilian Ngoyi Street (formerly Bree Street), one of the busiest taxi lines in the city.
On Thursday evening, after extensive inspections and research by technical experts, the city finally gave residents some of the answers they sought.two males and one female.