Authorities charged three Massachusetts teenagers on Wednesday with destroying evidence and lying to federal officials investigating last month’s Boston Marathon bombings.

The Justice Department said it has charged Dias Kadyrbayev, 19, and Azamat Tazhayakov, 19, in conspiring to destroy, conceal and cover-up a laptop and a backpack of fireworks that allegedly belonged to suspected bomber, Dzhokhar Tsarnaev.

The DOJ also charged Robel Phillipos, 19, with willfully making materially false statements to federal law enforcement officials during a terrorism investigation.

Kadyrbayev and Tazhayakov lived in New Bedford and are Kazakhstan nationals who came to the United States on student visas, according to the affidavit accompanying the charges. Phillipos is a U.S. citizen who lived in Cambridge, Mass.