FBI

Dzhokhar Tsarnaev, teenage suspect in Boston marathon bombings, was hiding in a boat parked in a homeowner's backyard in Watertown.

Silver Linings Playbook star lent his support to victims recovering at Boston Medical Center in the wake of tragedy.

Brother of Dzhokhar, still on the run after a shoot out with police, has been identified after being killed by police.

Social media users incorrectlyaccused of Tripathi and Mike Mulugeta of being responsible for bombings at Boston Marathon.

The police operation that closed down Boston has ended with the capture of the remaining suspect. This is how the drama unfolded.

One alleged bomber is believed to be dead or in custody, the second is on the run, following an intense gun battle on MIT campus that left a university police officer dead.

Two suspects wearing baseball caps were caught on CCTV camera minutes before blasts at finish line of Boston marathon.

Barack Obama has delivered a powerful and inspired speech at an interfaith memorial service in Boston in the aftermath of the twin blast at the Marathon's finish line.

Timing of explosions at fertiliser plant near Waco leads police to admit they cannot "rule out sabotage".

A suspect is held over deadly poison sent to US president and Senator Roger Wicker

Two men seen leaving backpacks near finish line of Boston marathon.

Letter received at off-site location away from White House.

Philadelphia's chief medical examiner says he cannot be certain Gosnell aborted live babies - because they had degraded in freezer.

British boxing champion stirs controversy by urging fans to 'think of Syria, Pakistan, Iraq, Palestine and all the countries that are bombarded frequently.'

Boston University student's friend Zhou Danling in stable condition following surgery at a Boston Hospital

FBI suspects explosives were placed in nylon bags or backpacks along with ball bearings and nails, which maimed several victims.

US president urges civilians to speak up to authorities if they see something suspicious

US authorities made no arrests in relation to the twin blast that killed three people in Boston, Massachusetts

Local resident Liz Norden says two of her sons lost a leg in the explosions.

Pakistani Taliban spokesperson Ahsanullah Ahsan said group will continue targeting Americans.

FBI have searched an apartment in Boston's Revere district in connection with twin blasts in Massachusetts capital.