Updating a story from earlier this week, murder charges have been filed against a southern Illinois man in connection with a stabbing death outside a gun club.  Prosecutors in Jefferson County have charged 47-year old Sammy Kehrer of Mount Vernon with three murder counts related to the death Tuesday of Eric Houser.  Authorities say 37-year old Houser of Mount Vernon died at a hospital shortly after being stabbed in the chest during an altercation outside the Mount Vernon Gun and Sportsman Club.  Kehrer remained jailed Thursday on $3 million bond.