BostonMarathonIt’s supposed to be one of the greatest accomplishments in a runner’s career: finishing the Boston Marathon.

But this Patriot’s Day in Boston, the joy of Marathon Monday was shaken a mere 4 hours into the race as two explosions, one right after the other, went off near the finish line killing three people – one an 8-year-old boy – and injuring dozens more.

The New York Times reports that the Boston Marathon headquarters are on lockdown while Boston Police, normally on the scene for crowd control, investigate the explosions.

Competitor Running Magazine’s Editor in Chief Brian Metzler reports the situation is, “very serious, and many badly, badly injured.”

SNEWS Merchandising Editor Robin Enright and her family are safe, she reports, but shaken up. Enright was in town to watch her daughter run the marathon.

For a video of the scene, click here.