Who are Azamat Tazhayakov, Dias Kadyrbayev and Robel Phillipos?

Story highlights

The three men are friends of surviving Boston bombing suspect Dzhokhar Tsarnaev

Each is accused of removing items from Tsarnaev's dorm room after the April 15 attack

A friend of one of the men describes him as a "good kid" who "never got in trouble"

CNN  — 

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