the loss of innocent life as well as intense anger. >> reporter: we've seen a lot of grief and intense anger from a lot of members of this community since the shooting occurred. authorities still trying to figure out why john russell houser a man with a law degree and a history of mental issues bought a ticket to the movie "train wreck" and then unloaded on the audience at the beginning of the movie. they say he purchased it legally at a pawnshop in alabama last year. he was denied a concealed carry permit because he had a history with domestic violence and an arson conviction. in 2008 his wife took the guns out of his house because she was concerned about his mental issues. now authorities say they're looking into political blogs that houser was on. they also say that they're going through this investigation meticulously. they do admit there's a possibility they may never know exactly what took him inside and made him start firing on all the innocent people inside the theater behind me.