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The Boston Marathon came to a tragic end Monday afternoon when two explosions went off near the finish line just over four hours into the race. According to Local 15, a news station in Mobile, Alabama, the University of Mobile's cross country coach Ali Stevenson was in attendance and noticed bomb sniffing dogs at the start and finish line.
Stevenson told Local 15 that "they kept making announcements to the participants do not worry, it's just a training exercise." Stevenson also mentioned that he saw spotters on the rooftops during the start of the race and much more security than the usual marathon.
"Evidently, I don't believe they were just having a training exercise," Stevenson told Local 15. "I think they must have had some sort of threat or suspicion called in."
The cross country coach had finished the race just before the explosions and accompanied his wife out of harms way. According to The Boston Globe, two people were killed during the explosions and at least 125 people are injured.
There have also been reports that up to 10 victims have had limbs amputated at Massachusets General, according to Fox News live coverage. Senior White House officials also told Fox News that the tragic event was an "act of terror."
As of 6 PM EST, the Boston Police Department confirmed that no suspect is in custody and no persons of interest are being questioned after the New York Post reported that an unidentified person was being guarded in custody.
Thousands of onlookers were in complete shock after the explosions as they scattered in search of their loved ones. Others began pulling apart the wreckage to help survivors as Boston's streets were immediately shut down.
With bomb sniffing dogs and spotters allegedly at the marathon before the race, many people have come to suspect that Boston's police had been hinted to some sort of threat before the explosions. These suspicions have Boston's community and Americans around the world wondering if this was in-fact an act of terrorism.