Stephen Silva of Cambridge pleaded not guilty in federal court in Boston on Wednesday. Photo: TPD
A friend of accused Boston Marathon bombing suspect Dzhokhar Tsarnaev pleaded not guilty Wednesday in a Boston federal court to charges of trafficking heroin and possessing an illegal handgun.
Stephen Silva, 21, of Cambridge, is accused of giving Tsarnaev and his late brother, Tamerlan, the gun that was allegedly used to kill MIT police officer Sean Collier during a manhunt days after the April 2013 bombing.
Dzhokhar Tsarnaev and Silva attended Cambridge Rindge and Latin High School together.
Silva is due back in court on Oct. 8.
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