MANCHESTER, NH – A six-month joint investigation culminated in the arrest of four people connected to a Lawrence-based drug trafficking organization (DTO) that supplied significant amounts of narcotics to Manchester.
This investigation began in Manchester and later expanded into Massachusetts. It was a collaborative effort including the Manchester Police Department, the Massachusetts State Police’s Essex County Detective Unit, the Lawrence Police Department, and the DEA New Hampshire Office. During the course of the operation, investigators seized narcotics from the DTO that tested positive for the presence of carfentanil, a synthetic opioid that is 100 times more potent than fentanyl.
On September 16, 2025, law enforcement executed two residential search warrants in Lawrence, MA, resulting in the arrest of four Massachusetts residents, each facing narcotics distribution charges in Massachusetts:
- Diego De Los Santos Vizcaino, 34
- Samuel Tibrey Arias, 58
- Yeison Vizcaino Franco, 25
- Ysidro Martinez, 40
The investigation led to the seizure of significant quantities of illegal drugs, including:
- 2,113 grams of fentanyl
- 124 grams of crack cocaine
- 2.59 pounds of methamphetamine
Manchester Police Chief Peter Marr emphasized the significance of this investigation, stating: “Carfentanil is one of the most dangerous substances on the streets today, and it poses an extreme risk to public safety. This case demonstrates the importance of working closely with our local, state, and federal partners to identify and dismantle drug trafficking organizations that threaten our neighborhoods. I am proud of the hard work and dedication shown by all agencies involved.”
“This investigation underscores our dedication to disrupting the networks that bring dangerous substances into our communities,” said Lawrence Police Chief Maurice Aguiler. “The Lawrence Police Department remains fully committed to aggressively combating the flow of illicit drugs in our city and across state lines. We are proud to stand alongside our law enforcement partners in this effort, and I want to sincerely thank all the agencies involved for their unwavering commitment and collaboration.”
This case is being prosecuted by the Essex County District Attorney’s Office in Massachusetts.