POLICE are searching for a potentially lethal drug which was stolen from an ambulance in Barnsley.

A vial of Epinephrine, which can be fatal if it is injected or ingested, was taken from an ambulance on Queens Drive on Tuesday evening.

The drug is in a long purple box with 'Epinephrine' on its side.

Five vials were initially stolen and although four have been located, there is still one missing.

Police have urged anyone who finds it to either ring 101, hand it in at any police station or take it to the hospital's A&E department on Gawber Road.