In Russia, a bus left a road in Moscow before ploughing into a subway entrance, leaving four people dead and 11 injured. Russian officials say the incident happened near Slaviansky Boulevard metro station. Footage shows people scattering as the bus ran down wide steps before being brought to a halt by the tunnel's roof. <br/><br/>The crash happened in icy conditions. There is no suggestion it was a terror attack. Russian investigators said the driver told police the vehicle had started to move suddenly. The investigative committee said, he tried to apply the brakes but they did not work.<br/>All those killed in the crash were knocked down by the bus, which had been at a standstill before it drove on to the pavement and careered down the steps of the underpass. The victims included a woman in her thirties and a teenager. Health officials said two of the injured were in a serious condition.<br/><br/>