Scotland Yard has admitted failing to act on intelligence about an illegal rave where a teenager drank a fatal cocktail involving the drug ketamine.
Fifteen-year-old Rio Andrew died in hospital yesterday following the unauthorised party in Croydon on Saturday night.
Police attempted to halt the rave but allowed it to continue after some of the estimated 2,000 revellers began hurling fire extinguishers. The Metropolitan Police has launched an internal review.
Gavin Barwell, the Conservative MP for Croydon Central, criticised the police response.
Some of Rio's closest friends paid their own tributes on Twitter:
Rio Andrew, a pupil at Holland Park School in Kensington, was described today as "an able scholar destined for academic success."