Obama: Boston Bombings "Act of Terrorism"

April 16, 2013 AT 12:10 PM
U.S. president Barack Obama held a news conference Tuesday to give an update on the federal investigation into Monday’s deadly bomb attacks at the finish line of the Boston Marathon. New details were scarce and Obama said investigators don’t yet know who is responsible for the attacks, nor do they have a sense of motive. Host @DavidBegnaud delivers breaking news and today's trending buzz in 45 seconds.