Arrest over 'green Rolex' death 11 July 2013 Last updated at 22:33 A man has been arrested in connection with the death of a teenage girl who had taken fake ecstasy tablets. The 18-year-old woman died in Alexandria on Tuesday. She and three friends had taken green tablets with a Rolex Crown logo on them. Similar tablets have been linked to the deaths of six other people in the west of Scotland in the past two months. The 24-year-old man has been arrested over allegations he was concerned in the supply of controlled drugs. He was detained in police custody, and is expected to appear at Dumbarton Sheriff Court on Friday. Dangerous chemical Police said the teenager had taken the tablets in the West Dunbartonshire town with three friends in the early hours of Tuesday. The three men, aged 18, 21 and 25, were all admitted to hospital. A total of seven people in Glasgow, Lanarkshire, Ayrshire and West Dunbartonshire have died after taking the Rolex tablets over the past two months. Most were aged in their early 20s. The tablets have also been linked to the deaths of several people in Northern Ireland. Police have urged people not to take the tablets, which are sold as ecstasy but contain a dangerous chemical called PMA. Posters warning about the dangers of the tablets, which cause extremely high temperatures, hallucinations and convulsions, have also been been put up at this weekend's T in the Park music festival. On Wednesday, Dr Richard Stevenson of Glasgow Royal Infirmary told the BBC numerous other people had been admitted to intensive care after taking the tablets. Very frightening Describing the effect the tablets have, Dr Stevenson, a specialist doctor in emergency medicine, said: "Initially it starts off with hyperactivity, unable to sit still, they are quite restless. A batch of similar green tablets, which also contain PMA but have been stamped with a Heineken logo rather than the Rolex crown, were seized in Aberdeen earlier this week.