Last modified: Tuesday, May 20, 2008 1:21 AM EDT Trial under way for Mansfield officer accused in child's death BY MICHAEL GELBWASSER SUN CHRONICLE STAFF FOXBORO - An off-duty Mansfield cop accused of striking and killing a 10-year-old Foxboro girl in an auto accident involving a landscaping truck waived his right to a jury trial at the last minute Monday. Today marks Day 2 of the bench trial of Aaron Fine in Norfolk Superior Court in Dedham, said David Traub, spokesman for Norfolk County District Attorney William Keating. Opening arguments were held Monday. Fine, 34, is charged with negligently driving a landscaping truck owned by his family company when he struck and killed Rosie Shatz on Dec. 2, 2006. Shatz was riding her bicycle near her Willow Street home at the time. A Norfolk County grand jury in January 2007 indicted Fine on four charges: motor vehicle homicide/negligent operation, operating a motor vehicle without a license, failure to safely pass a bicyclist and operating at an unsafe speed. Fine allegedly lacked the proper driver's license for the size of the truck. The maximum penalty for misdemeanor motor vehicle homicide is 2 1/2 years in the House of Correction. Fine is on unpaid leave from the Mansfield Police Department pending the outcome of the trial.