The feds have arrested a man they say was the source of the gun the Tsarnaev brothers used to kill MIT police officer Sean Collier three days after the 2013 Boston Marathon bombings.
Stephen Silva was arrested last week, but charges were made public Tuesday, according to WHDH-TV in Boston.
The station reported that a federal indictment against Silva does not mention the Tsarnaevs or Collier’s death, but a law enforcement source said Silva was the source of the Tsarnaevs’ gun.
Here’s what you need to know:
1. The Source of the Gun Had Been a Mystery for More Than a Year
The news of Silva’s arrest comes more than 15 months after the bombings and their aftermath and a handful of Tsarmaev associates were charged as part of the probe.
But the question of where the Tsarnaevs’ gun came from had been unanswered until Tuesday.
2. Silva Had a Pistol With an Obliterated Serial Number in February 2013
— Alysha Palumbo (@AlyshaNECN) July 22, 2014
The indictment says Silva had a Ruger model 95 9mm pistol with the serial number obliterated as of February 2013. That same kind of gun was used to kill Collier two months later, federal officials have previously said. It was also known previously that the gun used to kill him had the serial number obliterated.
3. Stephen Silva Has a Twin Brother Named Steven Silva Who Was Close With Dzhokhar Tsarnaev
Wait, their names are Stephen and Steven Silva? Are you kidding me?
— Elleseaa (@Elleseaa) July 22, 2014
According to the Boston Globe:
Silva was close friends with Tsarnaev, and was a classmate at Cambridge Rindge and Latin. His twin brother, Steven Silva, was even closer to Tsarnaev, as the pair attended high school and UMass-Dartmouth together.
4. He’s Charged With Conspiracy to Distribute Heroin
According to the Globe, Stephen Silva is charged with conspiracy to distribute heroin and possession of a firearm with an obliterated serial number.
New England Cable News posted the arrest warrant, which you can read below:
5. It’s the Second Development in the Bombing Case in 2 Days
Silva’s arrest is the second development in the bombing case in as many days. On Monday, jurors convicted Azamat Tazhayakov, a classmate of Dzhokhar Tsarnaev, of obstructing a terrorism investigation.