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
A British military healthcare worker is being monitored at the Royal Free Hospital following a needle-stick injury in Sierra Leone.
City traders are paying up to £200 to cure their hangovers with a vitamin drip, according to a doctor from Surrey.
People in Harrow are amongst the biggest savers in the country, according to a study of ISA balances.