Undercover detectives from the Somerville Police Department setup up surveillance at the Home Depot parking lot on Mystic Ave. last Sunday.
The police have reportedly regarded this location as a “hot spot” for narcotics trafficking.
At one point, suspicious activity was observed by officers as two individuals drove into the parking lot area, police said.
According to reports, one of the two occupants of the vehicle held in plain view what appeared to be a hypodermic syringe along with a belt.
This individual was also reportedly talking on a cell phone repeatedly and looking around the area.
Another individual eventually arrived and began speaking to the men in the car, police said, and money was exchanged for something the man had brought with him.
Police officers then converged on the scene and placed all of the men under arrest.
Theodore Zaborski, 44, of Quincy, was charged with conspiracy to violate drug law as well as on a warrant charge.
Liam Higgins, 37, of Boston, was charged with conspiracy to violate drug law and possession of a class E drug.
Miguel Rincon, 30, of Jamaica Plain was charged with conspiracy to violate drug law and possession of a drug to distribute.