Two blasts hit Boston Marathon finish line, at least two killed

BOSTON (Reuters) - Two explosions hit the Boston Marathon as runners crossed the finish line on Monday, killing at least two people and injuring 23 on a day when tens of thousands of people pack the streets to watch one of the world's best known marathons.

Pictures from the scene showed blood stains on the ground and several people knocked down. Massachusetts General Hospital was treating victims of the explosion in its emergency room but information about their condition was not immediately available, a spokeswoman said.