Commuters on Thameslink services will face delays until 10am this morning after a fault with one of the lines in Tooting.
The disruption is affecting services between Wimbledon and Streatham.
According to Network Rail: "A fault with the electric third rail at Tooting is causing disruption to trains between Wimbledon and Streatham.
"This is expected to continue until 8:15am.
"Trains will divert via Micham Junction."
No services are running from Platform nine at Wimbledon station, with passengers being diverted via the tram to Mitcham Junction, to change for their destination.
A later statement via Twitter estimated the delays to impact services until 10am.
Got a story? Contact the newsdesk at rebecca.taylor@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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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 here