The attorney for a western Iowa woman accused of murder says key evidence should be excluded from her murder trial. Attorney Greg Steensland says authorities violated the constitutional rights of Dixie Shanahan because they got a search warrant for Shanahan’s home in Defiance without probable cause that a crime had taken place. Shelby County Sheriff’s Deputies searched the home in October and found the body of Shanahan’s husband, Scott, hidden in a bedroom. Shelby County authorities say they requested the search warrant because Scott Shanahan had been missing for more than a year. Dixie Shanahan is charged with first-degree murder. Her murder trial is scheduled to start April 7th. A judge will rule next month on the request to exclude the evidence from the trial.