- Watch Richard Slee's full report below
A two day inquest has begun into the death of 18-year-old Georgia Jones from Havant who died after falling ill at Mutiny Festival in Portsmouth.
Father of one Tommy Cowan, 20, from Havant also died at the festival in May.
They were among 15 revellers admitted to Queen Alexandra Hospital from Mutiny on Friday 25 May, with organisers issuing a warning of a “high strength or bad batch” of drugs.
Festival performances on Sunday 27 May were cancelled following the deaths.
Five people arrested on suspicion of supplying Class A drugs at the time were released under investigation.
The inquest heard Georgia took two "double strength" ecstacy tablets and died after fitting for 50 minutes.
Detective Constable Sharon Lewry, from Hampshire Police, said that Miss Jones had told friends she had taken two ecstasy tablets and a bag of MDMA powder was found in her bumbag.
Det Con Lewry said the festival, had been criticised for not carrying out enough security checks but she said a number of unused condoms were found in the toilets suggesting drugs had been smuggled on to the site in people's bodies and "would not have been found by the security".
The Portsmouth inquest heard that Miss Jones' mother, Janine Milburn, 41, was alerted that her daughter had fallen ill and rushed to the festival site in time to go in the ambulance with her to hospital.
She said that she found out that her daughter had previously taken drugs but had stopped after starting work as a care assistant for people with learning and physical difficulties.
Pathologist Dr Brett Lockyer said that Miss Jones had a temperature of 41 degrees when she arrived at the hospital and died of MDMA intoxication.
He said she had "extremely high" levels of MDMA in her body with a reading of 3,856 nano-grams per millilitre of blood.
He told Ms Milburn: "Once Georgia went into a seizure she wouldn't have known much of what was going on. Although it was distressing for you to see that, she wouldn't have known what was going on."
Miss Jones' sister, Danielle, said that she saw her early in the afternoon at the festival and realised she was under the effects of drugs.
She said: "She just walked up to me, she was gurning, I said 'What have you taken?' and I said 'Go and sort yourself out'."
Friend Chloe Edwards who saw her collapse said: "She was lying on the floor and she was fitting, I shouted 'Get a paramedic, get a paramedic' but no-one was coming, it felt like it was taking too long."
The festival, which has been running for six years, will go ahead in 2019 but under a new name in tribute to those who lost their lives.
It also said entry would be restricted to those over the age of 18.
Previously the festival admitted those over the age of 16.
An inquest into the death of Tommy Cowan will be held later this week.