Updating a story from last week, a Jefferson County man is now set to go on trial in May on murder charges, after he pleaded not guilty yesterday to three counts of first degree murder.  According to Jefferson County State’s Attorney Doug Hoffman, 47-year old Sammy Kehrer has been charged on three counts of first degree murder under different sections of the first degree statute,” said Hoffman.   Kehrer is accused of killing 37-year old Eric Houser of Mount Vernon after a fight last month outside the Mount Vernon Gun and Sportsman’s Club.   Houser was a father and self-employed carpenter who had helped design several projects throughout the city.  A motion to reduce Kehrer’s $3 million bond was denied.  He remains in the Jefferson County Jail and will appear in court next month for a pretrial on April 8^th.  A jury trial has been set for May 27^th.