A Massachusetts man has been accused of viciously killing his 90-year-old grandmother by bludgeoning her with a skateboard, authorities said. Devin Dube of Hudson was arrested on charges of murder, assault and battery causing serious bodily injury over 60, assault and battery with a dangerous weapon over 60, and assault and battery with a dangerous weapon in the fatal attack on Elaine Dube, according to the Hudson Police Department. Devin is accused of beating Elaine, his sister and his father at a home they all shared, on Tuesday, March 31, police said in a Wednesday, April 1, news release.