An 11-year-old boy pulled a child who later died from a water park pool in England after discovering him while "searching for his goggles", it has been claimed.
Two people have been arrested over the death of the five-year-old on Saturday, police said.
Eyewitnesses took to social media to describe how his lifeless body was discovered at Bosworth Water Park in Warwickshire, which he had reportedly been visiting with his family.
Posting on Facebook, Sheena Thomas said: "My 11-year-old nephew pulled this lil boy from the water after feeling his hair whilst searching for his goggles he had lost."
Faeeza Mwnuk said she witnessed a "young boy being carried out of the shallow water by an older boy who 'felt something by my feet'".
Reportedly named Charlie, the boy was taken to University Hospitals Coventry and Warwickshire, where he later died.
The outdoor attraction near Nuneaton includes 50 acres of parkland and 20 acres of lakes and lagoons for boating, fishing and sailing, according to its website.
A statement issued on the Facebook page of the park said: "From all of the staff at Bosworth Water Park, we would like to pass on our deepest sympathies to everyone affected by this tragic loss of life."
Sharon Robinson commented on a post by the water park, saying: "Would like to thank everyone involving in trying to help the emergency services and a big thank you to Walgrave Hospital for the help and support.
"I am a family member it was my grandson please do not speculate as no one really knows what happened, but it is a very sad time for us all and a very sad loss of such a young life."
Witness Raegan Birley said on the social media site: "We were quite near and were totally shaken seeing this happen.
"To everyone that helped, you worked so so hard, it must be devastating to see this news.
"To this little boy's family I am so so sorry. Things can change in seconds and this must be horrific for any family to go through."
Penny Broughton added: "I was helping today with the CPR and it truly was (the) most heartbreaking thing I've done."
Melanie Allen posted: "Saw this horrible tragedy yesterday and will never get those images out of my head."
A Leicestershire Police spokesman said: "We would ask that people do not speculate about the incident and the circumstances surrounding the death and leave the authorities to carry out their investigations."
Officers have asked that anyone who witnessed the incident or those who have footage at the park around the blue lagoon beach to call 101, quoting incident 440 of July 23.