Around the Nation
4:39 am
Wed September 18, 2013

Investigators Delve Into Aaron Alexis' Background

As the investigation into Monday's mass shooting at the Washington Navy Yard progresses, authorities are learning more about the mental state of the gunman, 34-year-old Aaron Alexis. A recent police report indicates Alexis was hearing voices coming from walls. Meanwhile, work is resuming at the Navy Yard.