Penticton RCMP are asking for witnesses and video as investigators work to determine what started the Bald Range wildfire near Summerland. BC Wildfire Service mapped the fire at 15,590 hectares Monday, up nearly 2,000 hectares from Sunday morning. Police said Monday their General Investigative Services team began investigating Aug. 7 after reports of the fast-moving wildfire. RCMP said one man was arrested inside the Summerland evacuation order area Sunday afternoon. Anyone with information about the origin of the Bald Range wildfire can contact the Penticton South Okanagan Similkameen Regional RCMP Detachment at 250-492-4300.