A 10-year-old boy was saved from drowning by a member of the public in a dramatic rescue operation in south east London, Evening Standard reports;
A 26-year-old man, who was also reported to be in the water, has not been found.
Emergency services rushed to Greenland Dock in Surrey Quays at around 8.20pm after reports of a child in the water.
Crowds gathered as the rescue effort unfolded for more than two hours.
Bystanders shared photos online of a heavy police presence as a police helicopter circled overhead. Fire engines and an ambulance were also at the scene.
A spokesman for the Met Police said: “Officers, including the Marine Policing Unit, attended and found that passing members of the public had recovered a 10-year-old boy from the water, but that a 26-year-old man in the water had not resurfaced.
“London Ambulance Service, London Fire Brigade and the Harbour Master also attended and rescue units entered the water but the man was not found. Next of kin are aware.”
The boy was taken to hospital as a precaution. Searches of the water will resume in the morning.
Police added the incident is not thought to be suspicious.
One photo from the dock shows a rescue lifeboat as emergency workers stand nearby