Just awful.

Via WBZ:

An eight-year-old child is one of at least two people killed when a pair explosions tore through crowds at the Boston Marathon.  Dozens were injured when two blasts erupted near the finish line in downtown Boston.  A thick cloud of white smoke billowed into the air as rescue crews rushed to the scene.

Via CNN:

 At least 132 people – including eight children – have been injured in the bombings, according to Boston-area hospitals. Boston police earlier said that two people were killed.

At least 17 of the injured are in critical condition, and at least 25 are in serious condition, area hospitals said.

A witness, Marilyn Miller, told CNN that she was about 30 feet away from the first bomb when it went off. The second bomb came about 12 seconds after and about 50 to 100 yards away from the first, according to authorities and an analysis of video from the site.