Criminal complaints against the trio revealed that Tsarnaev cut his long hair after the April 15 attack but before the FBI released his photo and that he allegedly told friends a month earlier that he knew “how to make a bomb.”
The court papers also suggest that the 19-year-old suspect was practically blasé when one of the friends texted to say he looked like the man in the FBI photos of the bomb suspect.
Among his replies: ‘lol,” according to the complaints.
The dead Boston Marathon bombing suspect has been identified as Tamerlan Tsarnaev, 26, and the one still being sought is his younger brother, Dzhokhar Tsarnaev, 19, several sources said Friday.
The older Tsarnaev died overnight in an exchange of gunfire with police.
Much of Boston is on lockdown as authorities search door to door for Dzhokhar Tsarnaev.