Boston Marathon bomber Dzhokhar Tsarnaev yesterday apologised for the deadly 2013 attack at a hearing.

As jurors looked at a photograph of Boston Marathon bomber Dzhokhar Tsarnaev giving the finger to a security camera in his jail cell, a federal prosecutor described it as a defiant act by an unrepentant man who didn’t care that he had killed four people, including an 8-year-old boy and a police officer.

Dzokhar Tsarnaev was yesterday found guilty of killing three people and injuring 264 others in the 2013 Boston Marathon bombing and of fatally shooting a police officer four days later.

The jury in the Boston Marathon bombing trial concluded its first day of deliberations yesterday without reaching a verdict on whether Dzhokhar Tsarnaev, is guilty of the 2013 attack that killed three people and injured 264 others.

Jurors in the federal death penalty trial of Boston Marathon bomber Dzhokhar Tsarnaev have begun deliberations, a day after both prosecutors and his lawyers told them Tsarnaev must be held accountable for participating in the terror attack.

As he planted a backpack containing a bomb just feet from a group of children, Dzhokhar Tsarnaev made a cold-hearted decision aimed at spreading terror, a federal prosecutor told jurors during closing arguments at Tsarnaev’s death penalty trial.

Two decades have passed since Timothy McVeigh set off a truck bomb outside a federal office building in Oklahoma City, killing 168 people, but the memory remains vivid for Tonya McCabe, who sat on the jury that sentenced him to die.

Prosecutors have rested their case against Boston Marathon bomber Dzhokhar Tsarnaev with gruesome autopsy photos of the people who died in the 2013 terror attack.

A man who became one of the lasting images of the Boston Marathon bombing when he was wheeled away, ashen-faced, his legs severely injured, has told a court that he locked eyes with the bomber’s older brother before the explosives went off.

My love for the marathon has grown in the past couple of weeks.

Bombing victim Erika Brannock is going back to where she was standing for last year’s Boston Marathon, so that she can move on, writes Abigail Jones.

Boston Marathon bombing suspect Dzhokhar Tsarnaev was yesterday charged by federal prosecutors in his hospital room with using a weapon of mass destruction to kill — a crime that carries a possible death sentence.

Boston Marathon bombing suspect Dzhokhar Tsarnaev was still in hospital this morning, in a serious condition and under heavy guard.

One of the two suspects in the MIT officer shooting is dead but the other, who is tied to the Boston marathon bombing, remains at large, Boston police said.

A police officer has been shot dead and armed police have converged on a neighbourhood near Boston amid reports of explosive devices being used against them.

Using futuristic photo-analysis tools, federal agents on the Boston Marathon case last night released images of two potential suspects to enlist the public’s help in hunting down the bombers.

The FBI has released photos of two suspects in the Boston Marathon bombings and is seeking the public's help to identify them.

President Barack Obama promised a grieving Boston to hunt down whoever was responsible for the deadly bombing at the marathon, while investigators focused on a man seen dropping off a bag and walking away from the site of the second of Monday’s two explosions.

In what could be a major break in the case of the Boston Marathon, police are hunting a man seen in a department-store surveillance video dropping off a bag at the site of the bombings that killed three people.

The father of one of the three people who died in the Boston Marathon bombings was at first told that his daughter had survived, but was in surgery and could lose a leg.

Investigators have an image of a potential suspect in the deadly Boston Marathon bombing but do not know his name and have not questioned him, a law enforcement official said today.

FBI agents zeroed in on how the Boston Marathon bombing was carried out – with kitchen pressure cookers packed with explosives, nails and other lethal shrapnel - but said they still did not know who did it and why.

US authorities are to maintain “enhanced security” at transport hubs as the nation struggles to make sense of the bomb attack on the Boston Marathon.

A 29-year-old restaurant manager has been identified as one of three people killed in the bombing at the Boston Marathon.