Detectives are investigating a fatal collision in Wandsworth.
Officers were called by the London Ambulance Service at 20:55hrs on Saturday, 11 January to Falcon Road, junction with York Road SW11, following reports of a road traffic collision.
Two cars had been involved in a collision; it is believed one of the vehicles then collided with a pedestrian and a set of traffic lights. The pedestrian, a man aged 69, was injured and pronounced dead at the scene.
Police have informed his next of kin but formal identification awaits. A post-mortem examination will be held in due course.
One of the drivers, a 32-year-old man, left the scene on foot but returned a short time later.
He was arrested on suspicion of causing death by dangerous driving and failing to stop at the scene of a collision. He was taken into custody and subsequently released under investigation.
The other driver, a 29-year-old man, was not arrested and is assisting police with their enquiries.
Road closures were in place but have since been lifted.
Anyone who witnessed the incident, or who has information or dash cam footage that could assist police, is asked to call the Serious Collision Investigation Unit at Merton on 0208 5435157.
Alternatively call 101 or tweet @MetCC, quoting CAD 6988/11 Jan.