Isobel Reilly's party death: Friends hold vigil
Friends of a teenager who died after falling ill at a party in west London have held a vigil in her memory.
Scores of youngsters gathered on a green in Chiswick, west London, two days after the death of Isobel Reilly.
The 15-year-old died in hospital after paramedics were called to a house in Barlby Road, north Kensington.
A man, understood to be university academic Brian Dodgeon, was arrested on suspicion of possession of drugs and child abandonment and later bailed.
Police said they were treating the death as "unexplained" but were looking into whether she died after taking drugs.
Mr Dodgeon, who is not thought to have been at the house at the time, was bailed until June.
He is believed to be a research fellow at the University of London Institute of Education and his research subjects have included health inequalities and alcohol consumption patterns.
A 14-year-old girl and two boys, also 14, who were at the party were also taken to hospital for observation.
Police were alerted by London Ambulance Service at about 0410 BST on Saturday.
Isobel, from Acton, west London, was taken to hospital but died later that morning.
Her friends gathered in a park in Chiswick, where she went to school, on Monday afternoon and laid floral tributes.
Det Sgt Neil Philpott, of the Metropolitan Police, has said he wants to speak to everyone who was at the party to find out what happened to Isobel.
A statement from Isobel's family said they were "devastated and heartbroken by her untimely death".
Professor Chris Husbands, the Institute of Education director, said he would be meeting with his senior team on Tuesday to make "appropriate decisions on the way we will proceed".