MARLBOROUGH — A Clinton man was arrested after police seized nearly a kilogram of cocaine during a multi-agency drug investigation in Marlborough.
According to the Marlborough Police Department, Jose A. Cuellar, of 90 West Street in Clinton, was arrested on Aug. 18, 2026, following an investigation by the Clinton Drug Unit, Drug Enforcement Administration (DEA) Worcester High Intensity Drug Trafficking Area (HIDTA), Marlborough Police Detective Unit, and North Worcester County Drug Task Force.
The Marlborough Police Department reported that investigators identified Cuellar as a Clinton-based cocaine dealer who sold the drug in the central and MetroWest regions of Massachusetts. According to police, Cuellar possessed, distributed, stored and transported cocaine in Marlborough and elsewhere in northern Worcester County during the investigation.
At the conclusion of the investigation, detectives executed a narcotics search warrant issued by Marlborough District Court at 339 Boston Post Road East, Apartment 2101, in Marlborough, MA, which investigators identified as the stash house.
During the execution of the search warrant, the detectives seized the following:
- 917 grams of cocaine
- 13 rounds of 9mm ammunition
- 16 clonidine pills, scales
- Packaging materials consistent with drug manufacturing and distribution
- $4,813 in suspected drug proceeds
Police estimated the street value of the drugs seized to be more than $91,700.
The Marlborough Police Department reported that Cuellar was charged with the distribution and trafficking of cocaine (200 grams or more), as well as subsequent offenses for these crimes.
Marlborough police also reported that Cuellar was convicted in Middlesex Superior Court in 2019 of trafficking cocaine and illegally possessing firearms/ammunition and sentenced to five to seven years in prison. Cuellar was on parole with an expected release date of March 30, 2027, at the time of his arrest.
Detective First Sergeant Miguel A. Martinez said the investigation demonstrated how drug activity crosses jurisdictional boundaries and requires cooperation among multiple agencies.
“We are very grateful for our relationships with our local, state, and federal authorities, who, working together, made this another successful investigation,” Martinez said.
