Dozens Injured in Boston Marathon Explosions: Eight Mercer Islanders Registered in Race

Dozens were injured and two were killed by two explosions near the Boston Marathon finish line, according to the Boston Police Department.

Thousands of runners, including eight from Mercer Island, were in Boston to run the Marathon, normally a festive day for the city.

But it was rocked by two explosions close to the finish line about five hours after the start of the race.

LINK: Back Bay Patch is providing up-to-the-minute news on this developing story.

There are multiple reports of victims with missing limbs, bloodied heads and other extremely serious injuries. WBZ-4 reported  at least a dozen victims with "grave injuries."

Massachusetts Emergency Management Agency confirms there were explosions but has not released any further details. Public Safety blogger Alert New England reported that all ambulances in the area were diverted to the scene.

One eyewitness said she was right next to the Prudential Center when she said she heard two explosions

"It was the loudest thing I've ever heard it stopped us in our tracks," said Marathon spectator Jennifer Curro.  

Registered runners from Mercer Island