82 Arlington Runners in Boston Marathon; Conditions Unknown Following Explosion

Explosions were reported just before 3 p.m. Monday at the finish line of the 117th Boston Marathon.

At least two people were dead and more than 100 injured, according to the Boston Globe. Boston-area news outlets reported that at least three booms were heard.

[Follow developments on the explosions and security situation on Beacon Hill (Mass.) Patch.]

The Boston Athletic Association reports that 82 runners from Arlington participated in the race — 41 men and 42 women. It was not immediately clear whether any local runners were injured.

The race shut down as soon as security became a concern.

Race day began with 26 seconds of silence in honor of the

If you're looking for family members or friends in Boston, or if you have family members who might be looking for you, go to this Red Cross site http://www.redcross.org/find-help to communicate.