UPDATE 9:35 CST: It is possible that police may have gotten word of a threat in advance, which would explain why there were bomb-sniffing dogs on site before the explosions, and they said that security was there as part of an exercise to not alarm anyone. Or, this security could have been there as part of normal security for this event. There is still no confirmation that any exercise was taking place. The Boston Globe tweets so far are all referencing bombs found after the first 2 went off. The article has been updated to reflect this.
UPDATE 10:07 CST: A local broadcast captures the runner's quote:
Stevenson, speaking with various news sources at the event, told one Alabama publication about what he witnessed during the race. While managing to finish the race before the explosions were in range of him or his bystander wife, Stevenson revealed some interesting information.
In the article, Stevenson is recorded as saying:
“They kept announcing to runners not to be alarmed, that they were running a training exercise.”
In fact, the eyewitness runner says that there were already a major presence of bomb sniffing dogs and even a bomb squad.
Runner Says ‘Bomb Sniffing Dogs, Bomb Squad Already On Scene Before Explosions’
Likely due to the perceived drill that was set to go on right before the actual explosion in the same area, the runner detailed how there was already a large presence of bomb sniffing dogs and even a bomb squad right nearby before the explosions hit. In fact, they had told the competitors and the fans that it was simply a drill — until they realized that real people were being injured and killed.
The numbers are not yet fully clear, but at least 100 were injured and at least 3 have died from the bombings.
These direct quotes by Stevenson, which have been captured via screenshot here in the event that the page is changed in any way or taken down, imply that the police were under the impression that the entire thing was a drill.
CORRECTION 9:35 CST: A previous version of this article referenced a tweet made by the Boston Globe, which reads:
“BREAKING NEWS: Police will have controlled explosion on 600 block on Boylston Street”
This tweet occurred after the first two explosions and is referencing an undetonated bomb.
Update 8:03 PM EST: Video report breaks down everything we know about the Boston drills –