CELINA, Ohio (WOWO): Authorities in Mercer County, Ohio have officially charged a 18-year old man in the 2011 murder of a man and his adult daughter. WCSM is reporting that Trevin Sanders, currently an inmate at the Indiana State Prison in Michigan City has been charged. Sanders is charged with aggravated homicide, kidnapping and robbery. In November of 2011, 70-YEAR OLD Robert Grube and his 46-year old daughter Colleen were killed during a robbery of at home near Fort Recovery.