The Boston region is in the midst of a security emergency as a massive manhunt is underway for one of the suspects in Monday’s bombings that killed three and injured more than 170 people.

We still don't know a lot of things about the Boston Marathon bombings and their aftermath ... placing the brothers in Cambridge; and their alleged decision to kill MIT officer Sean Collier ...

10th anniversary of Boston Marathon bombing marked with somber ceremony With a bagpiper playing “The Bells of Dunblane” and a few runners looking on, families of those killed in the Boston ...

from heartfelt coverage of the awful bombings at the finish line of the Boston Marathon to the dramatic final manhunt for the brothers believed to be behind the deadly explosions, Tamerlan and ...

Two classmates and a friend of Boston Marathon bomb suspect Dzhokhar Tsarnaev have been jailed on charges they tried to throw investigators off their friend's trail, federal prosecutors announced ...

Tamerlan Tsarnaev, a suspect in the Boston Marathon bombing who died during a firefight with police in April, appears to have been steeped in conspiracy theories promoted by extremist publications ...

More than a decade after the Boston Marathon bombings, Tsarnaev's death sentence ... MIT Police Officer Sean Collier during the ensuing manhunt. In trying to avoid a death penalty sentence ...

Rep. Michael McCaul (R-Texas), the former Homeland Security Committee chair, said the recent terror attack in New Orleans reminds him of the 2013 Boston Marathon ...

Police and bomb squads swarmed the area in one of the most significant responses to a bomb threat locally since the 2013 Boston Marathon bombing that killed three people and wounded 260 others.