BOSTON -- (AP) Two huge explosions rocked the Boston Marathon finish line at Copley Square Monday afternoon, killing two and causing scores of casualties, including several traumatic amputations on streets crowded with runners, spectators and post-race partiers.
"We will get to the bottom of this. We will find out who did this and we will find out why," President Barack Obama said Monday evening. "They will feel the full weight of justice.
Boston Police Commissioner Edward Davis said no suspect has been apprehended, but numerous people are being interviewed.
Massachusetts General Hospital, with 22 patients, reported that six were critical, including four with traumatic amputations.
Boston Medical Center reported 20 injured with two children among the wounded there. Their conditions were not immediately available.
Tufts Medical and Brigham and Women's Hospital also reported injured and well as Beth Israel Hospital -- bringing the total to at least 100.