Two explosions struck near the finish line of the Boston Marathon on Monday, killing two people and injuring dozens of others.

The Boston Policed department also reported a third explosion at the JFK library.

The JFK Library reported on Twitter that a fire had started in a mechanical room of a new building. "All staff and visitors are accounted for and safe. Investigators are investigating. Any tie to Boston Marathon explosions is pure speculation."

CNN Live Blog: Boston Marathon Explosion 

“This is a horrific day in Boston. My thoughts and prayers are with those who have been injured."

— Deval Patrick (@MassGovernor) April 15, 2013

The next press conference in Boston is scheduled for 7p ET. We will carry the press conference live and Erin Burnett will talk to eyewitnesses and will have the latest OutFront.