LOWER MERION TWP., Pa. (WPVI) — A jury found a man guilty of second-degree murder in connection with a deadly home invasion in Montgomery County.

The judge automatically sentenced 28-year-old Jeremy Fuentes to life in prison after the verdict on Wednesday.

Jeremy Fuentes, 26, of Philadelphia

Jeremy Fuentes, 26, of Philadelphia

Two other men, 41-year-old Charles Fulforth of Jenkintown and 42-year-old Kelvin Roberts of Philadelphia, are facing first-degree murder charges in connection with the crime.

Police say the trio targeted the wrong house in Lower Merion back in December, executing 25-year-old Andrew Gaudio and shooting his mother, 61-year-old Bernadette Gaudio.

RELATED: Wrong house was targeted in Lower Merion Twp. home invasion that left son dead, mother injured: DA

Fulforth and Roberts committed the home invasion, police say, but targeted a home that had a similar address to the house they actually meant to rob in neighboring Bucks County.

Charles Fulforth, 41, of Jenkintown and Kelvin Roberts, 42, of Philadelphia

Charles Fulforth, 41, of Jenkintown and Kelvin Roberts, 42, of Philadelphia

Officials say a total of eight people have been charged following the investigation.

The other five suspects were identified as Aaron Hiller, 24; Marcus Lee Jackson, 33; Jonathan Rodriguez, 26; Corry K. Simpson, 38; and Frances Staten, 38, all of Philadelphia.

All eight are accused of being part of a ring trafficking 3D-printed guns, silencers, and machine gun conversion devices.

District Attorney Kevin Steele previously said the men wanted to steal firearms in the Bucks County home “in furtherance of their gun trafficking organization.”

Gun trafficking ring dismantled

The gun trafficking investigation began after police say they recovered a 9mm 3D-printed ghost gun in Fulforth’s apartment in Jenkintown.

That was the gun used to fatally shoot Andrew Gaudio during the home invasion, Steele said.

Steele said investigators soon learned that Fulforth made the gun in his own firearm production facility. Steele went on to say Fulforth was also manufacturing machine gun conversion devices (aka switches) and silencers using multiple 3D printers.

RELATED: Mom uses Siri to call 911 during deadly Lower Merion Twp. home invasion

The members of the gun trafficking ring were involved in the production and sale of the weapons which, because they did not have serial numbers, would be difficult for law enforcement to trace.

The D.A. said that the ring was putting “silent machine guns” in the hands of criminals.

“By illegally selling factory-made firearms and manufacturing numerous types of firearms, silencers and machine gun conversion devices, this gun trafficking organization was arming criminals, and they were further equipping criminals by 3D-printing and installing switches on the firearms they sold, transforming them into fully automatic machine guns making them exponentially more deadly,” Steele said.

The eight suspects are charged with dozens of felonies related to gun trafficking, including felony counts of Corrupt Organization; Dealing in the Proceeds of Unlawful Activity; Criminal Use of a Communications Facility; Illegal Sale or Transfer of Firearms and Criminal Conspiracy.

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