It is feared that a young girl who went missing at the Liquid Water Park near Windsor has drowned after she was seen going under the water but "didn't come back up".
Video footage taken from the water park shows emergency services, including an air ambulance and fire crews at the scene this afternoon.
A woman who had been at the park with her children said that the girl was seen going under the water but "didn't come back up", according to Sky News.
She said: "At that point, the lifeguards came running. "She was with a group of friends for a girl's birthday. My daughter spoke to the birthday group."
The witness who did not want to be named said members of the public were asked to shout her name on the beach, in case she had got out of the water and was back on land.
The woman told Sky News: "But no one found her, the lifeguards were working incredibly hard. "After about 30 minutes, we were asked to leave the beach, just as the ambulance and fire crew arrived at the site. "There was a police helicopter, air ambulance, and a boat for search and rescue. "I saw one of the adults from the group which the girl had been with, and I asked if I could do anything to help, and she just asked that I prayed for her."
Another witness told Sky News that they "were waiting to go on things and lifeguards were running all over the obstacles and looking under them. "They were dismantling the Ninja Warrior near the beach, looking for her.
"Staff actually started asking customers for goggles to look for her underwater."