 There's a known cause yet on that fire. Meanwhile, 7,000 block of 12th Avenue in just the last little bit, about the last half hour or so, there was another residential fire. No one inside there, and that fire is now out, and we don't know yet what caused that one either. Live at the update desk, Frank Lindsey, Northwest News Radio. Firefighters are trying to save at least part of a Burien school building this morning. This fire is being investigated as arson, as we hear from Como 4's Lee Stoll.