"I think investigators still have probably more questions than they have answers," Assistant Attorney General Ben Agati told ABC affiliate station WMUR in Manchester, New Hampshire. "One of the biggest questions they have right now is motive. Why? And I think that's probably one of the more difficult things that they are trying to grasp, to understand how this came to be and to be able to be more definitive and to understand what the sequence of events was like inside that house."