The number of people potentially embroiled in the Boston Marathon bombings case grew Wednesday to include friends of surviving suspect Dzhokhar Tsarnaev . Not much is known yet about the three 19-year-old men -- Azamat Tazhayakov , Dias Kadyrbayev and Robel Phillipos . But here is what CNN has learned so far . All started at the University of Massachusetts-Dartmouth in 2011 , along with Tsarnaev . Each is accused of removing items from Tsarnaev 's dorm room after the April 15 attack , which killed three people and wounded more than 260 . FBI details how suspect 's friends trashed evidence . Azamat Tazhayakov . Tazhayakov was already in federal custody before Wednesday on immigration charges . He is from Kazakhstan and had a student visa . According to the University of Massachusetts-Dartmouth , Tazhayakov is enrolled , but was suspended pending the outcome of the case . He is charged with obstruction of justice . If found guilty , he could face up to five years in prison and $ 250,000 in fines . Harlan Protass , who represents Tazhayakov , said his client `` has cooperated fully with the authorities and looks forward to the truth coming out . '' Dias Kadyrbayev . Kadyrbayev is likewise a Kazakh national and charged with obstruction of justice . Similar to Tazhayakov , he could face up to five years in prison and $ 250,000 in fines if found guilty . The two men share an apartment in New Bedford , Massachusetts . Kadyrbayev 's lawyer , Robert Stahl , said his client `` did not have anything to do '' with the bombing and disputed that he tried to block the investigation . Kadyrbayev was taken into custody along with Tazhayakov last month on suspicion that he had violated the terms of his student visa , according to Stahl . He said Kadyrbayev was accused of a `` technical violation '' for failing to attend classes on a regular basis . Kadyrbayev is not currently enrolled at the University of Massachusetts-Dartmouth . According to an interview his father gave last week , the 19-year-old `` missed a couple , or maybe several classes . '' `` I can say about my son that he finished school with excellent grades ; he was good at math . He helped others . When he saw that help was needed , he always accommodated , '' Murat Kadyrbayev told Tengi News and STV channel in Kazakhstan . Timeline : Bombing , manhunt and more . Robel Phillipos . Unlike Tazhayakov and Kadyrbayev , Phillipos is a U.S. citizen . Like Kadyrbayev , he is not a current student at the University of Massachusetts-Dartmouth . Phillipos attended high school with Tsarnaev at Cambridge Rindge and Latin School in Cambridge , Massachusetts , where they both live . A yearbook photograph shows a smiling Phillipos . Almost directly in front of him , Tsarnaev stares at the camera -- his hand gently resting under his chin . Phillipos is charged with lying to federal agents investigating the bombing . He faces up to eight years in prison if convicted , along with a $ 250,000 fine . A friend described Phillipos as a `` good kid . '' `` He went to school , never got in trouble , took care of his mom , '' James Turney told CNN affiliate WBZ . `` He was not really outgoing , stayed in the house a lot , did homework , got good grades . '' Phillipos plays basketball and does n't have `` any anti-American thing about him , '' Turney said . `` It just does n't make sense . Robel does n't have anything to do with this , or what happened , so I do n't see why he 's being arrested , '' he told WBZ .
The three men are friends of surviving Boston bombing survivor Alexander Tsarnaev . Each is accused of stealing items from Tsarnaev 's dorm room after the April 11 bombing . A friend of one of the men describes him as a ` ` good kid '' who ` ` never get in trouble ''