Wilmington , Delaware ( CNN ) -- Prosecutors across Delaware are dropping charges in scores of drug cases -- and thousands of others remain in limbo -- as an investigation continues into missing evidence at the chief medical examiner 's drug lab . Delaware police are investigating drug charges amid a drug - related investigation . State police , attorney general shut the lab after evidence went missing , was altered . Local and state law enforcement are auditing more than 20,000 evidence bags .
Delaware police are investigating drug charges amid a drug - related investigation . State police , attorney general shut the lab after evidence went missing , was altered . Local and state law enforcement are auditing more than 20,000 evidence bags .