Drug poisoning suspected in death of 15-year-old Rose Farley after she fell ill at a birthday party
Reports claimed Rose Farley's drink may have been spiked with ecstasy.
Police investigating the suspected drug death of a 15-year-old girl in Liverpool have made an arrest.
Rose Farley fell ill at a birthday party on Friday evening and was taken to Alder Hey children's hospital where she died just after 5am on Saturday.
A 16-year-old boy from Liverpool has been arrested by Merseyside police on suspicion of supplying drugs.
Farley, from the West Derby area of the city, came home from the party after becoming ill. She was then taken to hospital.
Her death comes amid reports that her drinks may have been spiked at the party. The incident occurred days after Merseyside officers warned youngsters of a new ecstasy-type drug circulating in the area, known as pink ecstasy, Dr Death, or Pink McDonald's.
A spokeswoman for the force said Farley's death was still being treated as "unexplained". Although a postmortem examination had been carried out, the cause of her death has been withheld pending toxicology results.
A statement from Merseyside police said: "A 16-year-old man from the L5 area has … been arrested on suspicion of supplying controlled substances as part of the ongoing investigation. He is currently in police custody and being questioned by officers."
DS Tim Keelan of Merseyside police said: "At this stage it is too early to draw conclusions about the cause of death and it is unhelpful to speculate.
"The implication that this may be drug related is just one of the lines of inquiry that our comprehensive investigation is looking at. That said, I would like to take this opportunity to warn people about the dangers of taking illegal substances.
"The effects of drugs are not always immediately apparent or can be delayed. This can sometimes result in people taking more in order to speed up the effects. This can have devastating results, one of which can be death."
The police warning about the new drug was issued following the sudden deaths of two men in 24 hours in Cambridgeshire earlier this week. Another man died in similar circumstances in Bournemouth, Dorset, on 21 May.
Emergency workers were called to Miss Farley's home in the West Derby area of the city during the early hours of Saturday morning.
More than 4,500 Facebook users have viewed a tribute page set up in her memory.
Anyone with information is asked to contact detectives on 0151 777 4065 or call Crimestoppers anonymously on 0800 555 111.
guardian.co.uk, Sunday 3 June 2012 14.28 BST
Photograph: Paul Faith/PA