UPDATE on August 16, 2024 @ 4:50 p.m. KOOSKIA, Idaho - Idaho County Sheriff's Office said Friday that they have located missing Missoula biker, Zachary Demoss, who had been last seen on August 11. According to ICSO, at approximately 1:42 p.m. on Friday, Idaho County Dispatch received a call from the International Emergency Response Coordination Center. The IERCC reported receiving an SOS call from a Garmin inReach satellite communicator device.