Gabrielle Price was treated by ambulance staff at the house
Two people have been arrested after a 14-year-old girl became ill at a house party in Brighton and died.
Gabrielle Price, a pupil at Davison High School in Worthing, West Sussex, suffered a cardiac arrest at a party in Birdham Road, Moulsecoomb, on Saturday.
A post-mortem examination has taken place but was inconclusive. Further tests will be now be carried out.
A 39-year-old woman and a 17-year-old boy were arrested on suspicion of supplying drugs.
Sussex Police said Gabrielle was taken to the Royal Sussex County Hospital where she died about five hours after paramedics treated her at the house at 1725 GMT.
The 39-year-old woman, from Brighton, was arrested on suspicion of the supply of illegal drugs and was released on bail until 14 January.
The 17-year-old boy, from Hove, was arrested on suspicion of the supply of a class B drug and bailed until 26 January.
Della West, head teacher at Davison High School, said: "The thoughts and prayers of all the staff and students at Davison are with her family and friends."
Ms West paid tribute to Gabrielle as a quirky and popular pupil.
"She was politically aware and held strong opinions that she was able to defend articulately," she said.
"She loved music and was hoping to use her knowledge and creativity in a future career. She will be sadly missed."