An eight-year-old boy has died after getting into difficulties at a swimming pool in North Yorkshire.
The incident happened at Hambleton Leisure Centre in Northallerton at about 1625 BST on Wednesday.
The boy, who lived locally, was taken by ambulance to the Friarage Hospital in Northallerton where he was pronounced dead.
North Yorkshire Police has appealed for anyone with information to contact them.
Hambleton Council, which runs the pool, said it would remain closed.
Councillor Peter Wilkinson, cabinet member for health, said: "This is a tragic accident and we send our condolences to the family of this young boy.
"We are co-operating with the police in their investigation.
"As a mark of respect, the leisure centre will be closed until further notice."
He said police were interviewing staff on Wednesday evening.
Mr Wilkinson said he believed the boy drowned in the centre's 25m-long pool.
According to the council's website, the baths have "fun features including flume, waterfall, waves and geysers".
Mr Wilkinson said lifeguards employed by the council work at the centre, which was busy during the schools' summer break.
He added: "I would say our safety record is excellent and we have never had any issues to my knowledge.
"I am newly-appointed to the cabinet [but] I believe we have never had a tragedy like this before, and I hope we never have another one."
The councillor said he did not know the dead child's identity and said North Yorkshire Police would wait 24 hours before releasing his name.