Three people were killed in a truck crash in Roodepoort, west of Johannesburg, on Monday morning.According to Johannesburg Metro Police Department spokesperson Superintendent Wayne Minnaar the accident happened at around 09:00 on Christiaan de Wet Road near Clearwater Mall when the truck driver lost control of the vehicle and crashed into a cliff.This after one passenger, who survived the crash, jumped out of the moving vehicle, Minnaar said. He added the road was closed for about four hours between 09:00 and 13:00 as a cleanup of the scene was under way."It is alleged that the brakes of the truck failed. The driver and the two passengers died in the accident," he said.ER24 spokesperson Russel Meiring said paramedics were also on the scene."What we know is that three people were killed when the truck they were travelling in crashed into the side of the mountain on Allen's Nek in Constantia Kloof," said Meiring.The road had since been reopened.