Police have launched an investigation into the unexplained death of a 15-year-old girl in Liverpool.
Emergency workers were called to the teenager's home in the West Derby area of the city during the early hours of Saturday morning.
She was taken by ambulance to Alder Hey Children's Hospital but died just after 5am, police said.
A post-mortem to establish how the youngster, named in reports as Rose Farley, died was carried out yesterday but the results are not yet known.
A Merseyside Police spokesman said: "Officers are investigation the circumstances surrounding her death, which is being treated as unexplained at this time."
Reports have suggested that Rose had spent the evening at a social club party before being taken ill, and may have had her drink spiked.
The police spokesman said detectives were aware of the claims, but that it would be counter-productive to speculate on how she died at this stage.
He added: "At this stage the cause of death is yet to be established. Officers are following a number of lines of inquiry."
Thousands of Facebook users have viewed a tribute page set up in Rose's memory.
Paisley Bretherton wrote: "r.i.p rose its so sad what happened to u, u had ur whole life ahead off u my thoughts are with your family xx."
Annemarie Taylor added: "thinking of all the family so so sorry to hear your very sad news r.i.p rose life is just so unfair the whole community is absolutely devastated xxxx"
Her death comes just days after Merseyside Police issued a warning about a dangerous ecstasy-type tablet being distributed on the streets of the North West.
Officers have advised people against taking the potentially fatal pink pills, which are know on the street as pink ecstasy, Dr Death or Pink McDonalds.
The warning was issued following the sudden deaths of two men in 24 hours in Cambridgeshire earlier this week.
A man also died in similar circumstances in Bournemouth, Dorset, on May 21.