Two young clubbers suspected of taking ecstasy have died after going to all night raves at Alexandra Palace.

The men, aged 20 and 21, were taken to a North London hospital on Sunday (27) morning, where they were pronounced dead. A third man, 20, remains in hospital in a critical but stable condition.

The 21 year-old man is believed to have gone to an all night dance event called Bass Culture, which began on Friday night and lasted until Saturday morning.

Dubstep group Nero and BBC Radio 1 DJ Zane Lowe were among the acts billed to play.

Police are investigating whether the men took a particularly harmful batch of MDMA, a key chemical in ecstasy, and are urging anyone who attended either of the events and took illegal substances to seek medical attention.

Detective Inspector Rita Tierney said: “Although it is too early to say what caused these men’s health to deteriorate, we are investigating the possibility that illegal drugs may have been involved.

“If you have taken what you believed to be MDMA, or any other substance, during this weekend’s events at Alexandra Palace, and are now feeling unwell, I would strongly urge you to attend your nearest hospital as soon as possible.”

A special licensing review panel convened a month ago to consider forcing the Palace to shut at midnight rather than 3am following a barrage of complaints from angry residents.

Neighbours had claimed that drunken revellers were stumbling through their gardens, urinating, littering and shouting in the early hours of the morning.

But the panel decided to maintain the licence.

Anyone with information that could assist the investigation is urged to call 0208 345 0737.