AN IDENTITY THEFT CASE, INVOLVING A WELL KNOWN, LOCAL, CONSTRUCTION PERSONALITY HAS BEEN DECLARED A MISTRIAL. MEDFORD POLICE CLAIM THAT LOUIS MAHAR OF MAHAR BROTHERS CONSTRUCTION, FORGED HIS ESTRANGED WIFE’S SIGNATURE ON AN AMENDED TAX RETURN AND KEPT THE CASH. THE JURY RETURNED EVENLY SPLIT, FORCING THE MISTRIAL. BUT THE JUDGE HAS SCHEDULED ANOTHER PROCEEDING SOME TIME NEXT MONTH.