News Mercer County Narcotics Task Force Seizes $56,000 in Heroin by MercerMe Staff July 27, 2016 by MercerMe Staff July 27, 2016 The Mercer County Narcotics Task Force concluded a two-week investigation Tuesday with two arrests and the seizure of $56,000 in raw heroin, Acting Mercer County Prosecutor Angelo J. Onofri reported.