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.
Yeovil Town have slipped to the bottom League One after losing 1-0 at home to Fleetwood. Jeff Hughes scored the only goal of the game three minutes from time.
Plymouth Argyle are up to fourth in League Two after a comfortable 3-0 win over Portsmouth. All the goals came in the first half with Reuben Reid scoring on either side of a Lewis Alessandra strike.
Exeter City travel to Newport County tomorrow (3pm kick-off).
In the Conference, Torquay United and Forest Green Rovers shared the points in a thrilling 3-3 draw at Plainmoor, with the hosts throwing away a two-goal advantage.
Ryan Bowman and Toby Ajala gave the Gulls a 2-0 lead after just 20 minutes. Kurtis Guthrie headed a goal back for Rovers shortly before half-time.
Midway through the second half Ajala restored the two-goal cushion, but two goals in four minutes from James Norwood and Guthrie earned Rovers a share of the points.
Plymouth Argyle have moved up to fourth in League Two after a comfortable win in the 'Dockside Derby' over Portsmouth.
There was early excitement at Home Park. Lewis Alessandra was brought down in the box in the sixth minute, and Reuben Reid confidently scored from the spot.
Fifteen minutes later the advantage was doubled. Kelvin Mellor teeing up Alessandra for a clincal finish.
And it was soon 3-0 as Portsmouth couldn't cope with Argyle's attacking prowess. Mellor the provider once again, this time settting up Reid for his second of the game.
No more goals in the second half, but the Pilgrims did come close. Lee Cox hit the cross bar. Deane Smalley saw his shot saved by former Exeter City goalkeeper Paul Jones. And Jones denied Smalley again when he tipped the substitute's shot onto the post.
Somerset County Cricket Club has announced that Nick Compton is to leave the club by mutual agreement.
We would like to acknowledge the contribution Nick has made to Somerset CCC during his five years with the Club.
He will be missed and we are disappointed he has decided to leave. He departs with our very best wishes for the future and with our thanks for his outstanding contributions on and off the field.
I am sorry to see Nick depart as he is a quality cricketer but it is fundamentally important that he, or any player for that matter, wants to be here and is able to perform to the best of their ability; sadly this is not something Nick feels able to achieve at this time.
Nick Compton will leave straight away and says he wants to base himself closer to home in London. It is thought he may return to play for his former county, Middlesex.
I have loved playing for Somerset, but I have decided to re-locate more permanently to my base in South-West London. I have always set myself the highest of professional standards, and I don't want to compromise myself or the club, going forward.
I appreciate Somerset’s understanding of my wish to balance both my personal and professional life. The club will always have a special place in my heart and I owe Brian Rose a huge debt of gratitude for the privileged opportunity he gave me to become a Somerset cricketer, which in turn has enabled me to fulfil a number of cricketing goals.
Thanks to everybody who has made me so welcome in the last five years. I have been part of some exceptional teams, experienced the warmth of Somerset's amazing supporters who make it such a great club to play for, and wish everybody connected with Somerset Cricket continued success.
This year's Devon stage of the Tour of Britain generated more than £6 million for the local economy, according to an independent report.
Around 230,000 spectators turned out along the 110-mile route from Exmouth to Exeter.
The draw for the FA Cup second round was made earlier this evening.
Just Plymouth Argyle and Yeovil Town are left in the competition, and they have both been draw away from home.
Argyle go to Crewe Alexandra or Sheffield United.
Yeovil will have to get past either Notts County or Accrington Stanley.
Those ties will be played between the 5th and 8th of December.
Work is taking place to repair the Camel Trail between Hellandbridge and Dunmere for one week.
Sections of the trail were badly damaged during last winter's storms - Cornwall Council hopes the work will be completed by the weekend.
Exeter Chiefs have beaten Bath in the LV Cup.
A record Sandy Park crowd of 11,785 saw Gavin Henson kick two penalties for the visitors, but Rob Baxter's men responded with tries from replacements Carl Rimmer and Moray Low, plus eight points from the boot of Gareth Steenson.
In rugby's Championship, bottom-of-the-table Plymouth Albion lost 19-0 at Jersey.
The Cornish Pirates take on Nottingham at the Mennaye Field tomorrow afternoon (3pm).
Plymouth Argyle and Yeovil have both made it through to the second round of the FA Cup.
The Pilgrims beat non-league AFC Fylde 2-0. Peter Hartley and Marvin Morgan with the goals at Home Park.
Jordy Hiwula scored his first goal for the Glovers as they beat League One rivals Crawley 1-0 at Huish Park.
But Exeter City were knocked out last night by non-league Warrington. The Grecians lost 1-0 to a side who are a hundred places below them in the football pyramid, and were making their debut in the first round.
The only goal was scored by Craig Robinson in the 6th minute. City's best chance fell to David Noble, but his shot crashed against the crossbar.