Authorities are investigating a fatality from a RV Trailer fire in Terrebonne early this morning (Monday). Redmond firefighters were called to 686 NE Wilcox Avenue shortly after midnight. They found a thirty-foot RV trailer fully involved in flames and threatening nearby structures. Firefighters protected exposures and extinguished the fire. Firefighters confirmed one person had perished in the fire. The cause is under investigation. The trailer was being used as a full-time residence.