BOSTON (AP) -- Two college friends of the surviving Boston Marathon bombing suspect are scheduled to be arraigned on charges of disposing of evidence from the suspect's dorm room.
Dias Kadyrbayev and Azamat Tazhayakov, both 19, are expected to be arraigned Tuesday in federal court in Boston of face charges of conspiracy to obstruct justice.
Prosecutors say the men, both from Kazakhstan, tried to thwart the investigations into the April 15 explosions by throwing away fireworks and other items they found in Dzhokhar Tsarnaev's dorm room the day before his capture.
Authorities later discovered the fireworks in a New Bedford landfill.
Like Tsarnaev, they were students at the University of Massachusetts Dartmouth at the time.
Lawyers for both men have already said they did nothing wrong.