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More tests are to be carried out on the body of a teenage girl who died suddenly in Oxford.
Martha Fernback suffered a heart attack at Hinksey Park at the weekend. It's thought the 15 year old had taken a form of ecstasy. A post-mortem examination proved inconclusive. A 17-year-old boy, who was arrested, has been released on bail.
The results of a post-mortem examination carried out on the body of a girl who died in Oxford are inconclusive.
Thames Valley Police is continuing to investigate the death of 15-year-old Martha Fernback who suffered a cardiac arrest while at Hinksey Park on 20th July 2013.
Further tests will be carried out, although the results are not expected to be known for at least six weeks.
Video. Tributes have been pouring in for a 15-year-old girl who died after taking drugs in Oxford. Martha Ferback suffered a heart attack at Hinksey Park after taking what she thought was ecstasy.
A 17-year-old boy has been bailed until September 5 after being arrested on suspicion of possession with intent to supply a controlled drug.
His arrest follows the sudden death of Martha Fernback outside a community centre in South Oxfordshire.
Teenager Martha Fernback suffered a heart attack outside the South Oxford Community Centre at Hinksey Park on Saturday and was later pronounced dead in hospital.
Tributes and flowers have been left at the place where Martha suffered the heart attack.
A post-mortem is due to take place today after a 15-year-old girl suddenly died in Oxford. Martha Fernback suffered a heart attack while at the South Oxford Community Centre at Hinksey Park on Saturday and was later pronounced dead in hospital.
Martha had taken a substance earlier that day which she believed was MDMA, better known as the drug ecstasy. Thames Valley Police are investigating and say the results of toxicology and histology tests will take several weeks.
A 17-year-old boy from the Oxford area has been arrested on suspicion of possession with intent to supply a controlled drug.
A 17-year-old boy from Oxford has been arrested on suspicion of possession with intent to supply a controlled drug after a 15-year-old girl died suddenly at a community centre. It's thought Martha Fernback may have taken MDMA, widely known as the drug Ecstasy.
Det Insp Brendan Murray from Thames Valley Police said: 'Firstly our thoughts are very much with Martha’s family, who have been left devastated and distraught by her death. Following our initial enquiries we now understand Martha had taken a substance earlier that day which she believed was MDMA.
'It would be wrong to speculate on what this substance was or what caused her death, as the investigation is still at an early stage. A full post-mortem examination will be carried out tomorrow, which will include toxicology and histology tests.'
The family of a 15-year-old have described her as an 'extraordinary, effervescent human being' after she died suddenly at a community centre yesterday. It's thought Martha Fernback suffered a heart attack, but her death is being treated as unexplained by Thames Valley Police who are investigating.
The tribute reads: 'Our beautiful girl was taken away from us yesterday, she was the most extraordinary, effervescent human being and all her family and friends felt so privileged to have known her.
'We are all utterly devastated and have sought such comfort in the beautiful condolences we have received from everyone.'
The incident happened at 1.25pm yesterday at South Oxford Community Centre in Lake Street, Oxford. Martha was taken to the John Radcliffe Hospital in Oxford, but she sadly died.
Police say a teenage girl has died after suffering an apparent cardiac arrest at a community centre in Oxford.
Officers attended the scene and the girl was taken to the John Radcliffe Hospital, but later died.Her death is currently being treated as unexplained and an investigation is underway.
Police said officers are in the process of informing the girl's next of kin.
A spokeswoman for the South Central Ambulance Service said they received a call from a member of the public at about 1.17pm to report a teenage girl in cardiac arrest.
She said a helicopter, an ambulance crew, a paramedic, an officer and an air ambulance were sent to the scene.