The two men who allegedly aided the sole surviving suspect directly linked to the Boston Marathon bombings were interviewed Wednesday by federal investigators after first appearing in federal immigration court.

Azamat Tazhayakov and Dias Kadyrbayev, both foreign students originally from Kazakhstan, appeared via video for a visa violation hearing in immigration court in Boston.

They have been held in a county jail for more than a week on allegations they violated their student visas while attending the University of Massachusetts Dartmouth with bombing suspect Dzhokhar Tsarnaev 

The marathon attack was not mentioned in court and their cases were continued.

Their attorneys said afterward that authorities have not indicated their clients had anything to do with the bombings. Federal authorities would not comment.

Attorney Robert Stahl said Tazhayakov and Kadyrbayev were drawn to Tsarnaev because he also spoke Russian.

Tazhayakov and Kadyrbayev are charged with conspiring to obstruct justice. A third man, Robel Phillipos, a U.S. citizen, is charged with making false statements to federal investigators.

The affidavit says Tazhayakov and Kadyrbayev agreed to get rid of the backpack after concluding from news reports that Dzhokhar Tsarnaev was one of the bombers. A court appearance for the three is scheduled for Wednesday afternoon.

Three people were killed and more than 260 injured on April 15 when two bombs exploded near the finish line. The suspect's brother, Tamerlan Tsarnaev, died after a gunfight with police several days later. Tsarnaev was captured and lies in a prison hospital.

Based on reporting by The Associated Press.

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