(PORT HURON) -- Police have named a person of interest in the death of a 14-year old Armada girl. 32-year old James Donald Vancallis of Wales Township remains jailed on drug charges in St. Clair County after marijuana plants were seized from his home during a search, which was part of the investigation into April Millsap's murder. Michigan State Police Lt. Mike Shaw says no charges related to the teen's killing have been filed. Investigators searched the VanCallis home in Goodells Monday this week and removed several items. VanCallis and his 66-year old father, James Bernard VanCallis waived their right to a preliminary exam Tuesday during two separate hearings in St. Clair County District Court. The pair has been charged with delivery and manufacturing marijuana and maintaining a drug house. VanCallis Sr. has posted bond. Millsap's body was found July 24 along the Macomb Orchard Trail in Armada. The investigation continues.