BOSTON - Boston police said three more people have been taken into custody in connection with the attack at the Boston Marathon.
The criminal complaint read by 7NEWS accuses two of the men -- Azamat Tazhayakov and Dias Kadyrbayev -- of obstructing justice by destroying evidence, namely a laptop computer and a backpack containing fireworks. The third man -- Robel Phillipos -- is accused of making false statements during a terrorism investigation, according to another criminal complaint.
On Wednesday morning, the Boston Police Department tweeted, "Three additional suspects taken into custody in Marathon bombing case. Details to follow."
"Please be advised. There's no threat to the public," Boston police later added.
Dzhokhar Tsarnaev, 19, and his brother Tamerlan Tsarnaev, 26, were the only suspects previously identified in the bombing case. Tamerlan died in a shootout with police. Dzhokhar was injured and taken into custody after a 22-hour manhunt.
Tsarnaev has been charged with using a weapon of mass destruction during the April 15 marathon. Three people were killed and more than 260 injured when two bombs exploded near the finish line.
An attorney for Azamat Tazhayakov and Dias Kadyrbayev said the men were arrested a week ago on immigration charges. Attorney Linda Cristello admitted her clients were also being charged in relation to the Boston Marathon bombing.
The criminal compliant against the men said Tazhayakov, Kadyrbayev and Phillipos went to Dzhokhar Tsarnaev's dorm room at UMass-Dartmouth three days after the bombing. Tsarnaev had left, but his roommate let the men in and the group watched a movie.
The men told authorities they saw a backpack with fireworks. The fireworks had been opened and emptied of powder. Kadyrbayev said he knew when he saw the fireworks that Tsarnaev was involved in the bombing.
Kadyrbayev said he decided to take the backpack to help his friend avoid trouble. He said he also took the laptop so Tsarnaev's roommate wouldn't think he was stealing or behaving suspiciously by just taking the backpack.
Kadyrbayev told police that after seeing the pictures of the Boston marathon bombing suspects, but before they were identified, he texted Tsarnaev and said he looked like the suspect on TV. Tsarnaev responded, "LOL" [Meaning laugh out loud] and other messages that Kadyrbayev interpreted to mean "you better not text me" and "come to my room and take whatever you want."
News of the additional suspects comes after the FBI said they had expanded their investigation and were interested in learning more about nearly a dozen persons of interest, according to ABC News.
Tamerlan's widow, Katherine Russell, is doing everything she can to assist with the investigation, according to her attorney, Amato DeLuca.
Earlier this week, the FBI visited the Rhode Island home where Russell was staying with her parents and carried away several bags. CNN said at least one bag was labeled DNA samples.
FBI agents said female DNA was found on a bomb fragment but that DNA could have come from many other sources, including a clerk who sold some of the raw ingredients in the bomb or a spectator at the race.
Investigators said they may have pinpointed a turning point in Tamerlan's growth into alleged radical: a 2012 trip to Russia in which he may have had contact with Russian Islamists.