UPDATE 2:25 p.m. EST: The suspects’ names are Azamat Tazhayakov, Dias Kadyrbayev and Robel Phillipos. From The Boston Globe:

Azamat Tazhayakov and Dias Kadyrbayev, both 19 and of New Bedford, were charged with conspiracy to obstruct justice by plotting to dispose of a laptop computer and a backpack containing fireworks belonging to bombing suspect Dzhokhar Tsarnaev, the US attorney’s office said in a statement.

Robel Phillipos, 19, of Cambridge was charged with making false statements to law enforcement officials in a terrorism investigation, prosecutors said.

9:53 a.m. MST: This morning, three additional people have been detained as suspects in the Boston Marathon bombings. It was announced this morning on a Police Twitter account, and it has been confirmed.

The Boston Globe reports, citing an unnamed police source, that the suspects are three college students and that they are suspected of aiding Dzhokhar Tsarnaev after he allegedly bombed the marathon.
NBC's Pete Williams reported that the three have been under FBI surveillance for 10 days.

CNN Reports that two of the students are originally from Kazakhstan and were already in custody on immigration charges. The third is a U.S. citizen. At least two of them will be facing obstruction of justice charges.

We will keep you up to date as they release more information.