A Livingston Parish man was arrested in connection with the shooting death of his pregnant wife. 24-year-old Christa Ann Alexander, was discovered dead in her home yesterday morning after her husband placed a call to 911. 23-year-old Couty Alexander, was arrested on a charge of second-degree murder after telling detectives he shot his wife in the back of the head with a 9-millimeter handgun as she gathered clothing from her closet.