The City of Johannesburgs Member of the Mayoral Committee MMC for Public Safety, Dr Mgcini Tshwaku, says a full investigation will be conducted into Monday's explosion in Doornfontein in the Johannesburg CBD .
The explosion of a transformer in a storage room in a student accommodation building led to the collapse of an adjacent wall.
Four people, including three security guards and a student tenant, were injured in the incident.
