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.'