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Press Release

Dominican National Involved in Federal Fentanyl Sweep in Lawrence Pleads Guilty

For Immediate Release
U.S. Attorney's Office, District of Massachusetts

BOSTON - A Dominican national pleaded guilty yesterday in federal court in Boston to federal drug offenses.

Oscar Francisco Marcano Valverde, a/k/a Oscar Marcado, a/k/a Oscar Malcano, 38, a Dominican national formerly residing in Haverhill, pleaded guilty to one count of conspiracy to possess with intent to distribute heroin, cocaine, and fentanyl and one count of being an alien unlawfully present in the United States in possession of a firearm and ammunition. U.S. District Court Judge Douglas P. Woodlock scheduled sentencing for Jan. 10, 2018. 

On May 30, 2017, after a year-long investigation aimed at attacking the fentanyl and heroin crisis in Lawrence and surrounding areas, more than 200 federal, state and local law enforcement officers executed a federal drug sweep to dismantle a Lawrence-based drug trafficking organization allegedly run by Juan Anibal Patrone. Marcano Valverde was arrested and charged along with Patrone and approximately 30 co-conspirators.  

Marcano Valverde worked part-time at a stash house where he prepared and packaged drugs as well as picked up and delivered drugs and drug proceeds at Patrone’s direction.

The conspiracy charge provides for a sentence of no greater than 20 years in prison, a minimum of three years and up to a lifetime of supervised release, and a fine of up to $1 million. The charge of being an alien unlawfully present in the United States in possession of a firearm and ammunition provides for a sentence of no greater than 10 years in prison, up to three years of supervised release, and a fine of up to $250,000. Marcano Valverde will be subject to deportation proceedings upon completion of his sentence. Sentences are imposed by a federal district court judge based upon the U.S. Sentencing Guidelines and other statutory factors. 

Acting United States Attorney William D. Weinreb; Michal J. Ferguson, Special Agent in Charge of the Drug Enforcement Administration, New England Division; Matthew J. Etre, Special Agent in Charge of Homeland Security Investigations in Boston; Essex County District Attorney Jonathan W. Blodgett; Colonel Richard D. McKeon, Superintendent of the Massachusetts State Police; and Lawrence Police Chief James Fitzpatrick made the announcement today. The DEA Cross Border Initiative, comprised of the DEA and the Andover, Haverhill, Lawrence, Lowell, and Wilmington Police Departments, conducted the investigation jointly with the Massachusetts State Police. Assistant U.S. Attorney Susan Winkler of Weinreb’s Narcotics and Money Laundering Unit is prosecuting the case.

The details contained in the charging documents are allegations. The remaining defendants are presumed innocent unless and until proven guilty beyond a reasonable doubt in a court of law.

Updated October 11, 2017

Drug Trafficking
Firearms Offenses