BOSTON (CBS/AP) – Boston police say three additional suspects have been taken into custody in the Boston Marathon bombings investigation.
Three men who attended college with the Boston Marathon suspect have been charged in connection with the case.
Azamat Tazhayakov and Dias Kadyrbayev are charged with conspiring to obstruct justice. A third man, Robel Phillipos, is charged with making false statements to federal investigators.
An FBI affidavit says the three men removed bombing suspect Dzhokhar Tsarnaev's backpack from his dorm room at the University of Massachusetts at Dartmouth three days after the bombing.
The affidavit says Tazhayakov and Kadyrbayev agreed to get rid of it after concluding from news reports that Tsarnaev was one of the bombers.
A court appearance for the three is scheduled for Wednesday afternoon.
Sources told CBS News senior correspondent John Miller that investigators arrested the three for harboring or aiding Tsarnaev after the fact. These will be federal charges.
The three were not arrested in the city of Boston, but nearby, according to Miller. This is possibly connected to the house raided in New Bedford on the Friday after the bombing.
According to CBS News correspondent Bob Orr, the charges are under seal, but they are related to incidents after the bombings and interfering with investigators.
Orr said, at this point in the probe, there is no evidence of Tamerlan and Dzhokhar Tsarnaev having direct help before the bombings.
Authorities had recently searched a landfill near UMass-Dartmouth, but they have not said what was found.
Earlier today, lawyers for Tazhayakov and Kadyrbayev said their clients have been extensively interviewed by federal investigators.
The two men appeared via video for a visa violation hearing in immigration court in Boston on Wednesday.
They have been held in a county jail for more than a week on allegations that they violated their student visas while attending UMass-Dartmouth with 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.