UPDATE 5-1-13 11:36am - Two law enforcement officials briefed on the investigation say two of the three people newly arrested in the Boston Marathon bombing case are two men originally from Kazakhstan who were friendly with the main suspect.
Azamat Tazhayakov and Dias Kadyrbayev appeared via video for a visa violation hearing in immigration court in Boston.
The officials who said they were in custody spoke to The Associated Press on the condition of anonymity because they were not authorized to talk about the investigation.
One of the officials said the third suspect was a man.
The two have been held in a county jail for more than a week on allegations that they violated their student visas while attending the University of Massachusetts Dartmouth with suspect Dzhokhar Tsarnaev, who is originally from Russia.
BOSTON (AP) - Boston police say three more suspects have been taken into custody in the marathon bombings.
In a tweet, the police department says only that three more suspects are in custody and more details will follow. Police spokeswoman Cheryl Fiandaca confirmed the tweet but referred all other questions to the FBI.
Three people were killed and more than 260 injured on April 15 when two bombs exploded near the finish line.
Suspect Tamerlan Tsarnaev died after a gunfight with police several days later. His brother, Dzhokhar Tsarnaev, was captured and lies in a hospital prison.
Both are Russian natives who lived for several years in the U.S. They are accused of using a weapon of mass destruction.