Boston police say there's been a third explosion in the city, following two blasts near the finish line of the Boston Marathon that killed two people and injured many others.
Police Commissioner Edward Davis says authorities aren't certain that the explosion at the JFK Library was related to the other blasts, but they're treating them as if they are.
David says there are no injuries stemming from the third explosion.
He urged people to stay indoors and not congregate in large groups.PREVIOUS STORY: A Pocatello man, who was one of 90 from Idaho listed as a starter in the Boston Marathon, was just one mile from the finish line when two explosions rocked downtown Boston. Click here to view live video.
Local attorney Lowell Hawkes notified his office that he was okay. Hawkes told co-workers that he was running in the final mile of the marathon when he heard the blasts.
KPVI News Six has also confirmed that a second runner from Pocatello started and finished the Marathon. Penny Parrish was the first female to finish in the Pocatello Marathon and qualified to run in Boston. She listed a finish time of 3:02:28 in the Boston Marathon. Parrish finished the race before the explosions and family members say she left the area and was not injured.
Penny's husband Daniel posted this comment on Facebook a short time after the explosions, "We are in Boston, I was standing very near where the explosion happened. Gratefully Penny ran an amazing race and we had already left. Our prayers for all those that were injured and there families."
Debbie Anglin, of Idaho Falls, had not finished the race. Her last known status was the half-way mark at 2:05:33.
Natalie Bitton, of Chubbuck, finished the race with a time of 3:31:48.
Glen Carpenter, of Idaho Falls, finished the race with a time of 3:23:49.
Von Crofts, of Idaho Falls, finished the race with a time of 3:50:30.
Kim Evans, of Chubbuck, finished the race with a time of 3:54:55.
Dave George, of Soda Springs, finished the race with a time of 3:53:19.
Kathleen Hart, of Idaho Falls, had not finished the race. Her last known status was the half-way mark at 2:03:00.
Craig Hudman, of Shelley, finished the race with a time of 2:48:23.
David Hurley, of Idaho Falls, finished the race with a time of 3:24:30.
Robert Jensen, of Pocatello, had not finished the race. His last known status was the half-way mark at 2:12:32.
Dotty Maddock, of Franklin, had not finished the race. Her last known status was the half-way mark at 2:14:10.
Josie Magee, of Pocatello, finished the race in 3:38:57.
Here is a link to the list of entrants, including 90 from Idaho, 14 from eastern Idaho, for the Boston Marathon.
This link provides the last known status of any particular runner.
The Boston Marathon says that bombs caused the two explosions heard at the finish line and that organizers were working with authorities to determine what happened.
Organizers made the announcement on the groups' Facebook page on Monday.
Authorities have headed onto the course to carry away the injured while stragglers in the 26.2-mile race were rerouted away from the site.
Bloody spectators were being carried Monday to the medical tent that had been set up to care for fatigued runners. Police wove through competitors as they ran back toward the course.
"There are a lot of people down," said one man, whose bib No. 17528 identified him as Frank Deruyter of North Carolina. He was not injured, but marathon workers were carrying one woman, who did not appear to be a runner, to the medical area as blood gushed from her leg. A Boston police officer was wheeled from the course with a leg injury that was bleeding.
About three 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.
RT @nypost: GRAPHIC photo from the scene at the Boston Marathon finish line https://t.co/mhKTly5aiF (via @brm90)
RT @YourAnonNews: The Boston Marathon explosion captured from the CBS News live stream http://t.co/aztURFVstM
RT @thedailybeast: Graphic photo of the aftermath of the Boston Marathon bombing (via @brm90) http://t.co/ZO3L8i42MD