A man has died after being hit by a motorcycle in south-east London, the Metropolitan police said. An investigation is under way after a fatal collision in Plumstead Road, Greenwich on Sunday evening. Police, London ambulance and air ambulance services attended the scene at about 7.30pm, after receiving reports of a collision involving a motorcycle and a group of pedestrians. Four people were injured, including the motorcycle rider and the male pedestrian who died at the scene. The motorcyclist and the two other pedestrians were taken to hospital for further treatment, police said. Several nearby roads remained closed on Sunday evening as inquiries into the incident continued, theMet said.