Robel Phillipos, Dias Kadyrbayev and Azamat Tazhayakov plead not guilty in Dzhokhar Tsarnaev case

Friends of Boston Marathon bombing suspect Dzhokhar Tsarnaev, Robel Phillipos, Dias Kadyrbayev and Azamat Tazhayakov, pleaded not guilty on Friday to charges that they hindered the investigation into the deadly attack.

Authorities allege that the friends went to Dzhokhar Tsarnaev’s dorm room at the University of Massachusetts-Dartmouth three days after the bombings, soon after the FBI released photographs of Dzhokhar Tsarnaev and his older brother.

Robel Phillipos, Dias Kadyrbayev and Azamat Tazhayakov are accused in an indictment of removing several items from the room, including Dzhokhar Tsarnaev’s laptop computer and a backpack containing fireworks.

Robel Phillipos, 19, of Cambridge, was indicted last month on two counts of lying to authorities while he was being questioned.

His lawyers declined to comment after the brief arraignment in U.S. District Court but said in a statement that Robel Phillipos “had nothing to do whatsoever with the Boston Marathon bombing or destroying any evidence”.

“In the end, it will be clear that this prosecution should never have been brought in the first place,” Derege Demissie and Susan Church said in the statement.

Authorities allege that 20-year-old Dzhokhar Tsarnaev and his brother Tamerlan, 26, ethnic Chechens from Russia, planned and carried out twin bombings near the finish of the marathon on April 15.

Three people were killed and more than 260 were injured.

Tamerlan Tsarnaev died in a gun battle with police as authorities closed in on the brothers several days after the bombings.

Dias Kadyrbayev and Azamat Tazhayakov, both Kazakhstan nationals, are charged with obstruction of justice and conspiracy to obstruct justice.

All four men attended the University of Massachusetts-Dartmouth.

Robert Stahl, an attorney for Dias Kadyrbayev, said his client was “shocked and horrified” by the bombings and had “no intent” to obstruct justice.

“I’m saying he didn’t dispose of evidence, didn’t understand it was evidence, and the rest will come out at trial,” Roberts Stahl said after the arraignment.

More than two dozen family members and friends attended the hearing to support Robel Phillipos. During an argument for bail in May, his lawyer portrayed him as a frightened and confused young man who was subjected to intense interrogation.

Azamat Tazhayakov’s parents and sister were in court during the brief arraignment. A translator said the family traveled from Kazakhstan in April and plan to remain in the U.S. until the case is resolved.

His attorney, Nicholas Wooldridge, said the government “rushed into things” by charging his client.

“This is a witch hunt,” Nicholas Wooldridge said after his arraignment.

All three men are due back in court on October 29.

Assistant U.S. Attorney John Capin said he expects to call about 20 witnesses during a two-week trial. No date has been set yet for it.