 A central Minnesota man has been charged with killing his grandparents who had taken him into their home. A criminal complaint filed Monday charges 33-year-old Gregory Shield with two counts of second degree murder and the deaths of 93-year-old Wilbert Shield and 80-year-old Gloria Shield of Painesville. Their bodies were found in their car along a rural road Thursday. Gregory Shield has a long criminal history that complaint did not give a motive for the killings. If you enjoyed this segment of Lakeland News, please consider making a tax-deductible contribution to Lakeland PBS.