Sean Collier

Boston Marathon bomber Dzhokhar Tsarnaev, who has been sentenced to death, filed a motion in federal court on Monday seeking a new trial, according to court records.

"The defendant had the tools and the ability to change the course of history," Rogers said. "He chose to say nothing, and because of that, he has taken everything away from us. He has taken our son."

Convicted Boston Marathon bomber Dzhokhar Tsarnaev's brother frightened at least one relative during a visit to Russia in 2012 when he espoused radical Islamist beliefs, a family member said on Monday.

Convicted Boston bomber Dzhokhar Tsarnaev was once a bright, hardworking child who won the adoration of his teachers and classmates alike, his former instructors testified on Wednesday for defence attorneys trying to spare him the death penalty.

Celeste Corcoran was hurled into the air by a bomb at the Boston Marathon finish line two years ago. Gillian Reny saw blood gushing from her legs and wondered if she would survive. William Campbell waited hours for his daughter to emerge from surgery only to learn she had been killed by the blasts.

Lawyers for accused Boston Marathon bomber Dzhokhar Tsarnaev and a terrorism expert serving as a prosecution witness argued on Tuesday over whether the defendant was paraphrasing Al Qaeda propaganda in a note he left four days after the deadly attack.

A friend of Boston Marathon bombing suspect Dzhokhar Tsarnaev is believed to have provided the handgun used to kill a Massachusetts Institute of Technology police officer during the manhunt, people with knowledge of the investigation said Tuesday.

Wearing an orange prison jumpsuit, with his arm in a cast, accused Boston Marathon bomber Dzhokhar Tsarnaev pleaded "not guilty" to committing the worst mass-casualty attack on US soil since 9/11, a crime that could bring him the death penalty.

Boston Marathon bomber Dzhokhar Tsarnaev, who has been sentenced to death, filed a motion in federal court on Monday seeking a new trial, according to court records.

"The defendant had the tools and the ability to change the course of history," Rogers said. "He chose to say nothing, and because of that, he has taken everything away from us. He has taken our son."

Convicted Boston Marathon bomber Dzhokhar Tsarnaev's brother frightened at least one relative during a visit to Russia in 2012 when he espoused radical Islamist beliefs, a family member said on Monday.

Convicted Boston bomber Dzhokhar Tsarnaev was once a bright, hardworking child who won the adoration of his teachers and classmates alike, his former instructors testified on Wednesday for defence attorneys trying to spare him the death penalty.

Celeste Corcoran was hurled into the air by a bomb at the Boston Marathon finish line two years ago. Gillian Reny saw blood gushing from her legs and wondered if she would survive. William Campbell waited hours for his daughter to emerge from surgery only to learn she had been killed by the blasts.

Lawyers for accused Boston Marathon bomber Dzhokhar Tsarnaev and a terrorism expert serving as a prosecution witness argued on Tuesday over whether the defendant was paraphrasing Al Qaeda propaganda in a note he left four days after the deadly attack.

A friend of Boston Marathon bombing suspect Dzhokhar Tsarnaev is believed to have provided the handgun used to kill a Massachusetts Institute of Technology police officer during the manhunt, people with knowledge of the investigation said Tuesday.

Wearing an orange prison jumpsuit, with his arm in a cast, accused Boston Marathon bomber Dzhokhar Tsarnaev pleaded "not guilty" to committing the worst mass-casualty attack on US soil since 9/11, a crime that could bring him the death penalty.