A 14-year-old boy has died and a 13-year-old boy is in a critical condition after they got into difficulty in a river, police said.
The older boy's body was found after an extensive search in the River Tyne near Ovingham Bridge, Northumberland.
The younger child was rescued from the water and taken to hospital where he remains in a critical condition, Northumbria Police added.
Emergency services were deployed at about 15:30 BST on Saturday due to concerns for the welfare of two teenage boys who were seen in the river near the bridge.
The parents of both boys are being supported by specially trained officers, police said.
Ch Supt Helena Barron said: "This is an absolutely tragic incident and our thoughts are with the families of both boys at this difficult time as we continue to support them.
"A number of agencies were involved in the incident and their support was hugely appreciated.
"It is with great sadness that we could not provide a more positive update."
Fire crews joined those from North East Ambulance Service, Great North Air Ambulance (GNAAS) and Northumbria Police in the search.
GNAAS said staff "worked with the North East Ambulance Service to treat a patient before accompanying them to hospital".
A statement from Northumbria Police said: "A number of organisations conducted a thorough search of the area in a bid to locate the second boy.
"Sadly, the 14-year-old's body was later found in the water and he was pronounced dead at the scene."
A nearby resident whose house backs on to the police cordon remembered another teenager's death in the river.
Robert Hattersley, 13, died after getting into difficulty in the Tyne near Ovingham in July 2022.
The resident, who did not want to be named, said: "The kids don't know just how dangerous it can get down there.
"On a still day you can actually see small circles of water being made by the currents - that's how strong they are under the surface.
"Below the water is full of great big holes and boulders."
Another local woman, who also did not want to be named, said: "The kids don't realise how deep and dangerous it is.
"It's only May now and the summer hasn't even started.
"It makes you worry even more.
"My head is spinning thinking about how sad it is."
A cordon was still in place around the area on Sunday morning, with a police presence.
Forensics teams were seen carrying out investigations work near a swing on the river bank.
