Two explosions near the finish line of the 2013 Boston Marathon have been reported on Monday afternoon.
Witnesses are reporting that two loud bangs were heard near the finish line by the Mandarin Hotel.
The two bangs were heard about 15 to 20 seconds apart, with some reports describing a ball of flames coming out from the Marathon Sports store near the finish line. it is believed that venue was being used as a press center for the marathon.
Other early reports are claiming at least six people have been injured, although no news has been offered as to their condition.
Early video footage has shown chaotic scenes at the location, with some people blown off their feet when the explosion took place.
The cause of the explosions has not been determined, but some serious destruction has been reported to some temporary structures at the marathon.
Huge amounts of smoke could be seen coming from the Marathon Sports store and marathon officials were seen pulling at some metal railings that were twisted and piled on the ground, seemingly to free some people under them.
More details to follow - UPDATE: 2 DEAD, AT LEAST 28 INJURED, OBAMA NOTIFIED - CLICK HERE
Here is video footage emerging from the Boston Marathon explosions: