A male pedestrian is said to be fighting for his life in hospital following a crash with a motorbike.
The incident occurred around 1.20pm on Saturday outside Tooting Broadway station.
Police and the London Ambulance Service attended and found a man with injuries.
His condition is said to be critical.
The motorcyclist stopped at the scene and is not believed to be injured.
Police closed Tooting High Street and Mitcham Road for three hours.
All roads are now open.
More to follow.
Are you at the scene? Email our reporter at Rebecca.Taylor@london.newsquest.co.uk
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereComments are closed on this article