Shortly before 3 p.m. Eastern Time at least two explosions occurred near the finish line of the famed race. According to a Boston Herald reporter who was competing, he heard a loud bang, followed by smoke.

According to MyFoxBoston.com, some reports indicate one of the blasts came from a building just off the course at about the 26 mile mark of the 26.2 mile race. The marathon headquarters are reportedly on lockdown. Many runners were being held at the 26 mile mark and people and traffic were being diverted.

Fox News is covering the scene with a live streaming camera available via their website. To access the page, click on the button below.