'Serious concerns' over bogus Valium in Herefordshire
West Mercia Police are warning people "could die" from a batch of bogus Valium being sold in Herefordshire.
The warning comes after two people were admitted to intensive care at Hereford County Hospital last week.
The police said the pills resemble Valium but appear to contain other drugs.
Det Sgt Tim Powell said: "We have serious concerns that someone could die, it is absolutely vital to get this batch off the street."
He added: "There has been an unusual rise in overdose admissions at Hereford County Hospital in the last week and these drugs have had a serious effect on a number of young people."
The police said a 17-year-old boy had been bailed after being arrested on suspicion of supplying controlled drugs.
Four people aged between 15 and 16 have been admitted to hospital in recent weeks.