A 21-year-old man has died and two others are in hospital after they were thought to have taken drugs on a night out.
The Metropolitan Police said officers were called to The Cause nightclub in Ashley Road, Tottenham, shortly after 3am this morning following a number of people becoming unwell.
The force said a 21-year-old man was taken to hospital, but medics were unable to save his life.
His next of kin have been informed and a post-mortem examination is due to take place, with his death currently being treated as "unexplained".
Two other men were also taken to hospital where they are in a stable condition.
The Met added: "At this early stage of the investigation it is understood that all parties have taken drugs.
"At this stage we don't believe any persons were known to each other."
No arrests have been made.
Superintendent Simon Crick, in charge of policing for Enfield and Haringey, said: "There is no safe way of taking illegal drugs, however the incidents overnight have caused us particular concern.
"We urge anyone who bought drugs in or around the nightclub to dispose of these substances as soon as possible.
"An investigation is continuing to establish where these drugs have come from and I encourage anyone with information to contact police.
"If anyone has taken an illegal substance and becomes unwell then they should seek immediate medical advice."
