BOSTON — A college friend of Boston Marathon bombing suspect Dzhokhar Tsarnaev pleaded guilty Thursday to impeding the investigation by removing incriminating evidence from Tsarnaev’s dorm room several days after the deadly attack.

Dias Kadyrbayev, 20, admitted in federal court that he removed Tsarnaev’s laptop computer and a backpack containing fireworks that had been emptied of their explosive powder from Tsarnaev’s room at the University of Massachusetts-Dartmouth.

Twin bombs placed near the finish line of the 2013 marathon killed three people and injured more than 260.

Under a plea agreement, federal prosecutors said they would ask for no more than seven years in prison. The agreement allows his lawyer to argue for a lesser sentence. Kadyrbayev also agreed not to fight deportation after he completes his prison sentence.

U.S. District Judge Douglas Woodlock set sentencing for Nov. 18 but did not immediately accept the plea agreement, saying he first wanted to review a report that will be prepared by the probation department.