An 11-year-old girl has died after being hit by a boat at a watersports centre in west London on Saturday.
It's thought that Mari-Simon Cronje fell off an inflatable which was being towed by a boat which then struck her when it turned around.
There were a number of children riding the inflatable banana boat at the time.
Mari-Simon was airlifted to hospital but died there later. A big investigation is going on to find out exactly how the accident happened.