A 10-year-old boy who died after being rescued from a pond may have been trying to save his step-sister when he got into difficulties, police said.
Jordon was playing at the water's edge with his brothers and sister
Jordon Lyon was pulled from the pond in Wigan, Greater Manchester, by local fishermen on Thursday afternoon.
He was taken by air ambulance to the Royal Manchester Children's Hospital, but died in the early hours of Friday.
He was thought to have been supporting his step-sister as she struggled in deep water before slipping from view.
Jordon was playing at the edge of the pond known locally as John Pit, off Wigan Lower Road, in Standish Lower Ground with his two brothers, step-brother and step-sister on Thursday afternoon.
Greater Manchester Police said Jordon and his step-sister, nine-year-old Bethany, got into difficulties as they went deeper into the water.
After he tried to support Bethany, nearby fishermen pulled her from the water but Jordon slipped from view before they could get to him, police said.
The alarm was raised and members of Jordon's family - as well as the police - rushed to the scene to join the search.
After a frantic search he was recovered from the pond but was not conscious or breathing.
Police officers performed CPR and he was then taken to hospital, where police said his condition deteriorated. He died on Friday morning.
Jordon was a Year Six pupil at Beech Hill Primary School in Wigan.
Head teacher Janet Seddon said the whole school was "devastated" by the death.
She said: "Children, parents and staff are naturally very upset and struggling to come to terms with the situation.
"The news was broken to the children during a very sad and subdued assembly this morning.
"Our thoughts and sympathy go out to the family at this very difficult and heartbreaking time."
Det Ch Insp Phil Owen, of Greater Manchester Police, reiterated the dangers of playing in water, which in this case was more than 6ft (2m) deep.
"If you wish to enjoy the hot summer weather by cooling off in water then please use the provided paddling pools in parks or public swimming pools where there are people around on duty to ensure you enjoy the water safely," he said.