INDIANA, Pa. (AP) — Authorities say eight people have been arrested in the case of a 19-year-old man taken from his western Pennsylvania home last week and later found stabbed to death in a rural area. State police and prosecutors in Indiana County said seven adults between 18 and 21 were arrested on charges of kidnapping to facilitate a felony and/or conspiracy in the death of 19-year-old Hayden Garreffa. He was taken from his residence Thursday and his body was found Saturday. Some defendants were also charged with conspiracy; a 14-year-old girl was also arrested. Police said homicide charges "will be filed pending further investigation.” Authorities declined to discuss a possible motive.