As the president said yesterday, we still do not know who did this or why and a thorough investigation will have to determine whether it was planned and carried by a terrorist group, foreign or domestic," Hagel told the House Appropriations defense subcommittee. "It's important not to jump to conclusions before we have all the facts, but as the White House said last night, 'Any event with multiple explosive devices, as this appears to be, is clearly an act of terror and will be approached as an act of terror.'