At Least 21 Sandy Springs Area Runners at Boston Marathon as Explosion Rocks Race

Boston Police are reporting at least three people died and more than 100 were injured after two explosions occurred Monday afternoon near the finish line of the Boston Marathon. 

Video of the incident shows the explosion knocking runners and bystanders to the ground following the blast. 

At least 21 Sandy Springs area residents are registered entrants in the race:

• Matthew Beucker

• Charles D. Carver, Jr.

• Lauren E. Anthony

• Erica Escher

• Carolos Graham

• Angie Major

• Sean P. McHugh

• Hillarie Morris

• Terry Murphy

• Travis Presnell

• Scott Rigsby

• BJ Schaknowski

• Robert C Threlkeld

• Sarah P.Williams

• Laura A. Barnard

• Thiago B. Ferreira

• Brian P. Maloney

• Ken Reichel

• Alexander Sedykh

• Kathalie Shaw

• Jill Spiegel

The Boston Marathon released a statement around that said, "There were two bombs that exploded near the finish line in today's Boston Marathon. We are working with law enforcement to understand what exactly has happened."

The Associated Press is reporting at least two other explosive devices were found. 

According to the Boston Marathon's website, at least six runners in this year's race listed St. Petersburg as their hometown. If you wish to search for 2013 Boston Marathon runners, click here. 

The American Red Cross Safe and Well site has been activated. 

For the latest updates on the Boston Marathon explosions, follow BayBack Patchwith up-to-the-minute reporting. 

The White House has issued an official statement: 

"The President has been notified of the incident in Boston. His administration is in contact with state and local authorities. He directed his administration to provide whatever assistance is necessary in the investigation and response."

The American Red Cross Safe and Well site has been activated.