Several clues, including a Russian wiretap and a laptop, will help the FBI to know about the life of deceased Boston Marathon bombing suspect Tamerlan Tsarnaev.
The change in Zubeidat Tsarnaeva reportedly began a couple of years ago after she started talking that 9/11 attacks were conspiracy against Muslims.
The Boston Marathon bombing suspects were trained in carrying out the attacks, the chairman of the House Homeland Security Committee has said.
As the US investigative agency is trying to crack the Boston bombing case, it also faces tough questions if they mishandled prior information about the surviving suspect Tamerlan Tsarnaev.
The brothers accused of carrying out the Boston bomb attacks only occasionally went to a local mosque, and the elder man was known for interrupting sermons, the mosque said on Tuesday.
The surviving Boston bombings suspect has claimed that his older brother, not any international terrorist group, masterminded the deadly attack, according to a media report.
A total of 264 people have been treated in Boston area hospitals for injuries suffered in the marathon bomb attacks, the city`s public health commission said on Tuesday.
The surviving Boston Marathon bomber Dzhokhar Tsarnaev, 19, arrived on Boylston Street near the finish line about five minutes before the deadly April 15 explosion, according to the US case against him.
The parents of the two Boston bombing suspects have flatly denied that their sons, Dzhokar Tsarnaev, 19, and his older brother Tamerlan, 26, could be involved in Monday`s terror attack.
Day in Pics: 19th September
Showbiz World - September 19, 2014
iPhone6 fever grips the world