Fiery explosions interrupted the completion of the Boston marathon Monday afternoon.
The New York Times reported that at least two explosions went off near the finish line of the marathon race shortly before 3 p.m. Eastern Time, about four hours after the race started.
Fox News reports that two people were killed and dozens injured, including 10 people who reportedly lost limbs in the blasts.
Many runners were still on the course. About 500,000 people typically line up along the 26.2-mile route to watch the world famous race, the Times said, with the biggest concentration near the finish line.
About 25,000 runners typically compete in the marathon.
The Associated Press reported that two other bombs were found and dismantled, and officials reportedly detonated a fifth explosive device in a controlled explosion.
One of the dead was an 8-year-old boy, according to a state law enforcement source.
The blasts were about 50 to 100 yards apart, CNN reported, on a stretch of the marathon course lined with spectators cheering runners through the final yards.
CNN reported at least 134 people were being treated, with at least 17 of them in critical condition and 25 in serious condition. At least eight of the patients are children, CNN said.
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