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7 January 2015, 15:11
Tests on drugs linked to the deaths of three Suffolk men over Christmas have found they contained a dangerous ingredient called PMMA.
It's a much stronger ingredient than those usually found in ecstasy.
Police say it causes shaking and sweating, as well as high temperatures, heart rate and blood pressure
More than four hundred red triangular pills with a Superman logo on them were found by police in Ipswich at the weekend.
Its after three men who died in Suffolk on Christmas Eve and New Years Day are thought to have taken the pills.