Two people are in intensive care and another two remain in hospital on the Isle of Wight after taking a mix of unprescribed drugs.
Hampshire police were called to Newport Bus Station on Wednesday following reports that a 32 year-old man and a 41 year-old woman had taken drugs and collapsed. Both were taken to St Mary's Hospital for treatment.
Shortly after, a 24 year-old man and an 18 year-old woman were also admitted to hospital in a serious condition. The force believe they took the same drugs.
Staff at St Mary's hospital have warned against the dangers of taking medicine that hasn't been prescribed - saying that it can cause 'serious health concerns.'
Police are asking for anyone with information to call 101 quoting 44180390117.