The police made the announcement with a Twitter message Wednesday morning.
Three new suspects have been taken into custody in the Boston Marathon bombings investigation, the Boston Police Dept. tweeted Wednesday morning.
The development comes as investigators have continued to scrutinize two of Dzhokhar Tsarnaev’s classmates at UMass-Dartmouth.
Dzhokhar Tsarnaev’s alleged associates are natives of Kazakhstan and have already been detained by U.S. immigration officials for alleged immigration violations.
Azamat Tazhayakov and Dias Kadyrbayev were in federal immigration court earlier Wednesday morning on those matters, a government source said; however, the court hearing was delayed.
Authorities were not immediately saying who the three detained were or if Tsarnaev’s two classmates were part of the new group of suspects.
An attorney for Kadyrbayev has told media outlets that the two young men have been interviewed by FBI agents and that they were cooperating.
The Boston Police Dept. broke the news in a tweet, writing, “Three additional suspects taken into custody in Marathon bombing case. Details to follow.”
The Boston Police Dept. says there is no threat to the public.
Tamerlan and Dzhokhar Tsarnaev, two ethnic Chechen brothers from southern Russia, are accused of planting two explosives near the marathon finish line April 15, killing three people and injuring more than 260.
Tamerlan, 26, was killed during a getaway attempt in Watertown. Dzhokhar, 19, was transferred Friday from a Boston hospital to a federal prison medical center in Devens.
Five FBI agents paid a visit Monday to the family home of Katherine Russell, the widow of Tamerlan, Bomber No. 1. Investigators spent an hour and a half inside the North Kingstown, R.I., home. According to the Wall Street Journal, investigators collected Russell’s DNA.
In the last two weeks, the FBI has visited the Russell home four times. Monday was the first time they’ve left with evidence, including an agent seen holding a pair of scissors in a clear plastic bag, which may indicate the feds took a hair sample.
Russell’s lawyer claims she had no prior knowledge of the attacks and is doing everything she can to help the investigation.
Female DNA was found on bomb components used in the attack this month on the Boston Marathon, a source familiar with the investigation confirmed to Fox News, though the source cautioned that it is too early to draw hard conclusions from that evidence. “No one should expect that the investigation is over,” the source told Fox News in confirming the development first reported by the Wall Street Journal, adding that it is just one piece of evidence that investigators are looking at.
The revelation about female DNA came on the same day that the FBI went inside the Rhode Island home of bomber Tamerlan’s widow’s parents, and the nearby family of a man identified as his mysterious mentor hired a family spokesman to keep the media at bay.