Garin Veris was about a block away from the finish line explosions, Monday.
BOSTON (AP) _ The number of injured continued to rise in the hours after two bombs exploded near the finish line of the Boston Marathon this afternoon, killing two people.
Eight hospitals report that they are treating at least 134 people, with at least 15 in critical condition. The injuries ranged from cuts and bruises to amputations.
About two hours after the winners crossed the line, there was a loud explosion on the north side of Boylston Street, just before the photo bridge that marks the finish line. Another explosion could be heard a few seconds later.
Authorities shed no light on a motive or who may have carried out the bombings. Police said they had no suspects in custody.
A White House official - speaking on condition of anonymity because the investigation was still unfolding - said the attack was being treated as an act of terrorism.
President Barack Obama vowed that those responsible will "feel the full weight of justice.''
A senior U.S. intelligence official said two other bombs were found near the end of the course in what appeared to be a well-coordinated attack.
Boston Police Commissioner Edward Davis asked people to stay indoors or go back to their hotel rooms and avoid crowds as bomb squads methodically checked parcels and bags left along the race route.
Chillicothe native Garin Veris, who now works for the UMass Boston Athletics Program, was about a block away from the finish line when the explosions took place during Patriots' Day.
"It's just a big occasion here in Boston, and then to have something like this happen at the finish line of the Boston Marathon -- it's just a tragedy," said Veris.