A woman from Devon has died and a man, also from Devon, was airlifted to hospital with breathing difficulties during a training session at the National Diving and Activity Centre.
The two friends were diving with a second woman when they got into difficulties at the 260-ft deep former quarry in Gloucestershire.
The 30 year old woman from Tavistock suffered a cardiac arrest and was pulled unconscious from the water. Paramedics were unable to save her and she died later in hospital.
A man was flown by air ambulance to a specialist decompression unit at a hospital in Plymouth.
Police said they are not treating the incident as suspicious and it has been referred to the Health and Safety Executive.
Police are investigating the death of a female diver at the National Diving Centre, Chepstow, over the weekend. Police were called just before midday on Saturday after an incident involving a woman and man from Devon who were diving with an instructor. The woman died at the scene, the man was taken to a decompression unit in Plymouth. Officers are working with the Health and Safety Executive to investigate this unexplained death but it's believed not to be suspicious.
A woman from Devon has died and a man is seriously ill following an accident at a Gloucestershire dive centre.
Paramedics were called to the National Diving and Activity Centre at Tidenham in the Forest of Dean on Saturday.
The woman, from Tavistock, was treated by paramedics but died later in hospital. A man was been airlifted to a decompression unit in Plymouth.
Plymouth sporting stars have been honoured for their summer of success at the Commonwealth Games and European Championships this evening.
At a special event at the University College of St Mark and St John honorary degrees were given to Plymothian swimming star Sian Davies and diving coach Andy Banks.
Before the event our reporter Jacquie Bird went to meet two young divers who are already successful in the sport and talked to them about their hopes and the pressure they face in the field.
Olympic diver Tom Daley has been crowned Man of the Year by Attitude magazine.
The 20-year-old, who's from Plymouth and came out publicly last year, has topped the magazine's Hot 100 Sexiest Men list for the past two years.
It's a real honour to be named Man of the Year 2014 by Attitude magazine. It's been a good year and to be given this award means a lot.
The Attitude Awards celebrate the achievements of gay people in entertainment, fashion and politics.
Divers are being told not to dive on the Scylla after a survey found it could be hazardous due to corrosion.
The National Marine Aquarium in Plymouth, which has been involved in managing the wreck since it was sunk in 2004, says only external diving around the wreck is safe.
A local diving company has condemed divers 'vandalising' the wreck - saying they've removed bars and bolts intended to ensure safety.
A man has died after a diving accident in Cornwall.
The 63 year-old was with friends but got into difficulty off Trevose Head near Padstow yesterday afternoon (Sunday).
He was pulled out of the water and airlifted to the Royal Cornwall Hospital in Truro, where he was pronounced dead. Police are investigating.
Tom Daley is no longer the 'hottest hunk" in the world according to a magazine survey out today. He's been knocked off top spot by Zac Efron in the poll compiled by Heat magazine. David Beckham is in third place.
The search for the body of a diver, which was spotted on the seabed off Brixham, continued today but was abandoned this afternoon.
The coastguard helicopter, RNLI crews and police divers were all called out to look for the body, which was sighted near Breakwater Beach on Thursday.
The search is due to resume this morning for the body of a diver on the seabed off Devon.
The alarm was raised yesterday at lunchtime after experienced divers reported the sighting near Breakwater Beach in Brixham. A large air and sea search was called off at dusk but police say it will begin again, depending on the tides. Nobody has so far been reported missing.
A large-scale air and sea search has been taking place in Devon today after reports that the body of a diver was seen on the sea bed off a beach in Brixham.
The search was abandoned at dusk but police say it will resume in the morning. Jacquie Bird has this report.