Lawyers for Boston Marathon bombing suspect Dzhokhar Tsarnaev have asked a judge to make prosecutors turn over family-related evidence as they try to build a case that his older brother was the "main instigator" of the deadly attack, the Associated Press reported.
The defence team is seeking a host of records from prosecutors, including any evidence to support its claim the FBI had asked Tamerlan Tsarnaev to be an informant.
Twin explosions at the April 15 marathon killed three people and injured more than 260 others. Tamerlan, 26, died in a shoot-out with police four days after the attack. Dzhokhar, who was 19 at the time of the bombings, was captured soon after his brother's death and pleaded not guilty to 30 charges.
Dzhokhar's lawyers wrote: "Any surveillance, evidence, or interviews showing that Tamerlan's pursuit of jihad pre-dated Dzhokhar's would tend to support the theory that Tamerlan was the main instigator of the tragic events that followed."
Dance teacher Adrianne Haslet-Davis lost part of her leg in the Boston Marathon bombing last year.Read the full story ›
Boston marathon bombing suspect Tamerlan Tsarnaev has been been linked to a triple murder in September 2011, according to US court papers.
Chechen immigrant Ibragim Todashev is said to have implicated Tsarnaev in the murder of three men found stabbed to death, in an apartment in Waltham, Massachusetts.
Todashev was shot and killed in May during a confrontation with police officials who had been interviewing him about his links to Tsarnaev.
According to Reuters, US media had previously reported that one of the victims was a close friend of Tsarnaev and authorities believe the killings were drug related.
The in-laws of dead Boston Marathon bombing suspect Tamerlan Tsarnaev have given evdience before a federal grand jury.
Judith and Warren Russel's daughter Katherine was married to the man authorities say is responsible for the April 15 bombings that killed three people and injured more than 260 others.
Two students from Kazakhstan have been indicted by a grand jury on obstruction of justice charges for helping the accused Boston Marathon bombers to hide evidence after the April attack that killed three people and injured 264, the US Attorney's office for Massachusetts said.
New images of the Boston Marathon bombing suspect show him bloody and dishevelled with the red dot of a sniper's rifle laser sight on his forehead after police found him hiding in a boat.
The pictures were taken by Massachusetts State Police tactical photographer Sergeant Sean Murphy of Dzhokhar Tsarnaev on April 19 after he was captured, four days after the bombing.
He released the images to show the "real Boston bomber, not someone fluffed and buffed for the cover of Rolling Stone magazine."
The police photographer who released images from the day the surviving Boston bombing suspect was captured has reportedly been "relieved of duty".
Boston Magazine editor John Wolfson wrote:
Sgt. Sean Murphy has been relieved of duty. Post coming shortly.
Since site is slow: Murphy has been relieved but not yet fired. Duty hearing next week.
Has been ordered not to talk to media or anyone else about events at Watertown.
A state police spokesman said the agency did not authorise the release of the photographs.
A police photographer has released images from the day the surviving Boston bombing suspect was captured because he was furious with a Rolling Stone magazine cover photo.
The photographs released by Massachusetts State Police tactical photographer Sgt Sean Murphy to Boston Magazine show a dishevelled Dzhokhar Tsarnaev with the red dot of a sniper's rifle laser sight on his forehead.
In a statement to the magazine, Sgt Murphy said Tsarnaev was evil and his photos showed the "real Boston bomber, not someone fluffed and buffed for the cover of Rolling Stone magazine".
He said the Rolling Stone cover insulted officers killed in the line of duty, their colleagues and their families by glamorising the "face of terror".
Rolling Stone magazine sparks controversy by placing Boston Marathon bombing suspect Dzhokhar Tsarnaev on its front cover.Read the full story ›
Boston bombing suspect Dzhokhar Tsarnaev pleaded not guilty to all charges as he made his first public appearance since the attacks.Read the full story ›