3 killed, more than 130 hurt by bombs at Marathon

Much of Back Bay locked down to protect crime scene

Two bomb blasts, 12 seconds apart, rocked the finish line of the Boston Marathon, killing at least three people, including an 8-year-old boy.

Kevin Cullen

A perfect Marathon day, then the unimaginable

President Obama asked the rest of the country to pray for Boston. But we need more than prayers. We need answers.

Just seconds after the first explosion rocked the area near the Boston Marathon finish line at about 2:50 p.m., there was a second blast a few blocks away on Boylston Street.

Amid shock at Marathon, a rush to help strangers

In the moments after the two explosions on Boylston Street, many were fleeing, but many were running to the wounded.

Liz Norden leaned on JimCasey, her sons’ uncle, as they awaited word on Norden’s sons.

Brothers watching Boston Marathon each lose a leg

Amid frantic phone calls and a panicked drive, Liz Norden pieced together the horrific truth that will forever change her two sons’ lives.