Former Cosatu general secretary Zwelinzima Vavi and EFF leader Julius Malema are plotting to overthr.
One person has died while three others were injured in an accident on the Garsfontein Road, Pretoria east, this afternoon, paramedics said.
Reports from the scene indicate that a cement truck overturned and landed onto two vehicles.
"Netcare 911 and other paramedics and emergency services arrived at the scene and found that one person tragically died due to the extensive injuries sustained, two others were seriously injured and a female driver escaped with minor injuries.
"Paramedics from various services stabilized the injured on scene before transporting them to a local hospital for the care that they required," Netcare said in a statement.