THIS BREAKING STORY WILL BE UPDATED AS NEW DETAILS EMERGE

The Boston Marathon headquarters has been closed after 2 explosions were reported near the finish line.

CNN is reporting that the explosions occurred roughly three hours after the first batch of runners crossed the finish line. At the time this article was published, many runners were still making their way to the finish. The explosions seem to have been based in or around the Fairmount Copley Plaza Hotel.

Officials are pulling footage from cameras in the area in hopes of spotting any suspicious activity.

UPDATE 2:24 PM

The blasts occurred around 2:50 PM EST. Dozens are said to be injured. Witnesses say some lost limbs.

 UPDATE 2:32 PM

Reports say another device may have been found in the Mandarin Hotel. 4 patients so far are being treated at Mass. General Hospital. Reports of dozens more have not been confirmed.