Our officers were called to a trespass incident near Charlton station at 2am on Wednesday 13 August, after reports of a man on the tracks.
Colleagues from the Metropolitan Police Service and London Ambulance Service are also in attendance. The man is currently still on the scene, and specialist officers are talking to him in order to resolve the situation.
More top news
You may have to re-think your costume as temperatures are set to be way above average this weekend
Lily Allen claims she was called a tart and refused a lift by a black cab driver who told her to go and "find an immigrant".
The moment a lorry driver stopped traffic to let out the apparent migrants from the back of his vehicle was filmed by another driver