Police have issued warnings regarding green "Rock Star" pills, which are emblazoned with a star motif after the death of a teenager in Liverpool.
A drug dubbed "Rock Star" sparked a series of police warnings in Lanarkshire, Scotland, in March after seven people were hospitalised and one died after allegedly taking the tablets which were being sold as Ecstasy.
The Scottish pills were described as yellow or red and were also said to have carried a star logo.
Officers from Strathclyde Police said at the time that while the exact contents were unknown, they could contain a cocktail of different substances.
More top news
Former footballer Frank Worthington has denied he is suffering from Alzheimer's - a day after his daughter said he was.
A list of results for London Mayor and the London Assembly
The Cameroonian international collapsed just seven minutes after coming onto the field, according to reports.