(CNN) -- A laptop, some empty fireworks and a jar of Vaseline landed three friends of Boston Marathon bomb suspect Dzhokhar Tsarnaev in jail Wednesday, charged with trying to throw investigators off their buddy's trail. Those are the items federal prosecutors say Azamat Tazhayakov, Dias Kadyrbayev and Robel Phillipos took from Tsarnaev's dorm room at the University of Massachusetts-Dartmouth in the hours after the FBI released photos of Tsarnaev and his brother Tamerlan, the suspects in the marathon bombings. According to FBI affidavits, they quickly recognized their friend from the pictures. When Kadyrbayev texted his friend to tell him "he looked like the suspect on television," Tsarnaev texted back "lol" and added, "come to my room and take whatever you want," the affidavit states. Phillipos, Tazhayakov and Kadyrbayev went to the room, where Kadyrbayev noticed a backpack containing fireworks that had been "opened and emptied of powder," according to the affidavit.
@highlight
Three friends of Boston bomb suspect face federal charges
@highlight
Lawyers say their clients have cooperated with investigators
@highlight
They're accused of taking items from Dzhokhar Tsarnaev's dorm room
@highlight
Tsarnaev texted friends, "Come to my room and take whatever you want"
Vaseline
According to the affidavit, they left with the backpack, the @placeholder -- which Tazhayakov believed could be used to make bombs -- and Tsarnaev's laptop.
Vaseline
Investigators found the pack, fireworks and @placeholder in a landfill last week after a two-day search.
Dzhokhar Tsarnaev
Tsarnaev
Tsarnaev
Tsarnaev
Dzhokhar Tsarnaev
Tsarnaev
About a month before the marathon attack, @placeholder had told Kadyrbayev and Tazhayakov "that he knew how to make a bomb," according to an FBI affidavit recounting the charges.
Robel Phillipos
Phillipos
@placeholder faces up to eight years in prison if convicted, along with a $250,000 fine; the charges against Kadyrbayev and Tazhayakov carry sentences of up to five years and $250,000 in fines.