Witnesses: Shooter Watched Movie For 20 Minutes Before Opening Fire

Investigators are trying to figure out why a man watched a movie for 20 minutes before opening fire and killing two people, wounding nine others and eventually turning the gun on himself.  

That man has been identified as 59 year old John Houser.

Authorities describe him as kind of a "drifter."

Witnesses told police he sat in the theater in Lafayette, Louisiana just like everybody else before he started shooting yesterday evening.

There were about a hundred people at the 7:10 p.m. showing of the Amy Schumer comedy "Trainwreck."  Police say they believe Houser acted on his own.