Roy A. Therrien

Roy A. Therrien, 19, of 1179 Grafton St.
An undercover officer was able to buy the sheriff’s department .40-caliber Glock for $650 from Mr. Therrien in mid-October in the Edgeworth Street area of the city, Sgt. Eric A. Boss said. The undercover officer allegedly bought 10 rounds of .40-caliber ammunition as well.
“Be careful it is a cop’s gun,” Mr. Therrien allegedly told the undercover officer, according to police reports.
Sgt. Boss said the sheriff’s department is investigating the theft of the firearm and he could not comment on how the gun was stolen.
“He knew the firearm he was selling had belonged to law enforcement personnel,” the sergeant said.
During the alleged gun buy, Mr. Therrien said he could get more guns and pills for the undercover officer to purchase, according to the sergeant.
“This individual had access and was willing to sell firearms to anyone that called him. We consider him a very dangerous person,” Sgt. Boss said.
“Anyone that is selling drugs and firearms to someone he had just met is a danger to the community.”
The vice squad then called the Worcester office of the Drug Enforcement Administration, the Bureau of Alcohol, Tobacco, Firearms and Explosives and the state police for assistance.
The undercover officer called Mr. Therrien in mid-November and set up another buy, Sgt. Boss said.
This time the officer allegedly bought 20 Percocet pills for $180, the sergeant said. Again Mr. Therrien said he could get guns if the undercover wanted to buy them, Sgt. Boss said.
A couple of weeks later, the undercover officer set up another meeting and allegedly bought a .32-caliber revolver from Mr. Therrien for $500.
After that gun buy, Mr. Therrien started to dodge the undercover officer, police said.
Sgt. Boss said an early December meeting was set up with Mr. Therrien for the sale of a .9mm, but Mr. Therrien never showed up. The undercover officer called Mr. Therrien again in mid-December, but the city man avoided his calls, the sergeant said.
“Once it became clear we weren’t going to be able to retrieve any more guns from this individual we arrested him,” Sgt. Boss said.
Police obtained an arrest warrant yesterday and with the assistance of the U.S. marshals office and the sheriff’s department found Mr. Therrien driving on Grove Street around 9:30 p.m. and he was arrested.
Mr. Therrien was charged with distribution of a Class B substance (Percocet), two counts of illegal sale of a firearm, two counts of possession of a firearm without a firearm identification card, illegal sale of ammunition, possession of ammunition without an FID card, possession of a large capacity firearm and receiving stolen property over $250.