From Devon & Cornwall Police:
Officers were first contacted at around 2.25 pm on Monday 25 May following reports of an upturned RHIB [rigid-hulled inflatable boat] in the water near Porthilly, Rock, near Wadebridge.
The Air Ambulance and Coastguard were in attendance at the scene assisting with three casualties. All three people were taken to the lifeboat house before heading to Treliske Hospital.
Sadly, a 17-year-old local girl was later pronounced deceased. Her next of kin have been informed.
Police are appealing for anyone who was in the area and witnessed the incident or captured the incident on camera to contact police on 101 quoting log 525 25/5/20.