A teenager who fell ill at a dance party at The O2 and later died may have taken ecstasy, it emerged.

A-level student Emily Lyon, 17, was pronounced dead in Queen Elizabeth hospital, Woolwich, on Saturday morning where she was taken by paramedicas called to the Red Bull Culture clash at the Greenwich venue.

Five other people fell ill at the music battle event, prompting police to consider a link.

A 17-year-old youth was arrested on Saturday in Kingston on suspicion of possession of MDMA with intent to supply.

Red Bull Culture Clash

Emily’s father Steve Lyon said : “We are absolutely devastated at what has happened and we’re struggling to come to terms with it.

“Emily was a wonderful, vibrant young lady. She was a loving daughter and a caring sister, who was much adored by her vast circle of friends.

“It can be seen how these so called ‘recreational substances’ can result in such tragic consequences for so many people.

“Those who take them can pay the ultimate price.”

Her mother Carol Needham, 50, told the Evening Standard : “Emily was a lovely, happy person. She had hundreds of friends. There have been hundreds of tributes to her. She was much-loved by everybody.”

A post mortem examination proved inconclusive and officers are awaiting the results of toxicology tests.

A JustGiving page reached its £2,000 goal in two days, with friends paying tribute to the Esher College student who previously represented Teddington School in Richmond in netball, cricket and rounders.