Portions of Boston remained closed to the public Tuesday following two deadly blasts at the finish line of the Boston Marathon on Monday. City, state and federal investigators are working to find the person or persons responsible for the bombing. NBC4's Patrick Healy reports for Today in LA on Tuesday, April 16, 2013.
Portions of Boston remained closed to the public Tuesday following two deadly blasts at the finish line of the Boston Marathon on Monday. City, state and federal investigators are working to find the person or persons responsible for the bombing. NBC4's Patrick Healy reports for Today in LA on Tuesday, April 16, 2013.