Prosecutor murder was "personal killing"

Peter Schulte, a friend of slain Kaufman County District Attorney Mike McLelland, believes the murder was personal. He tells CNN's Wolf Blitzer that crimes like this "just don't happen."

"If this was a case that somebody was trying to change, they would have been going after witnesses, not the actual prosecuting attorney," says Schulte.

The attack on McLelland and his wife, and the murder of county assistant prosecutor Mark Hasse "is sending quite a chill" through the law enforcement community in Texas. Schulte, a criminal defense lawyer, says he's carrying a gun more than he ever did because of the death of his friend.

For more on the investigation, watch Ruthless Aryan Brotherhood of Texas