Four people have been taken to hospital after becoming ill at a Belfast nightclub.
A 22-year-old man is in a serious but stable condition following the incident at Mynt nightclub in Dunbar Link.
A woman aged 20, a girl aged 17, and a man aged 19 are not believed to be in life-threatening conditions.
Police have said all four were taken to hospital after taking an unknown substance.
They have issued a warning to the public about taking illegal substances.