Subscribe | UPI Odd Newsletter Subscribe MOUNTLAKE TERRACE, Wash., Feb. 24 (UPI) -- Experts identified a metal plate that fell onto the second-floor roof of a Washington state fourplex as a dishwasher part, but its origins are a mystery. Mark Kauffmann, who heard the object land on the roof of his Mountlake Terrace building about 7 p.m. Feb. 9, said he called officials at nearby Paine Field, who took the panel and determined it did not drop from an airplane, The (Everett) Herald reported Thursday. Advertisement Kauffmann said the mystery only deepened when workers at the Appliance Recycling Outlet in Snohomish recognized the object as the reversible front panel from a dishwasher. "Dishwashers don't fly. At least I'm pretty sure of that," he said. Kauffmann said he does not believe the panel was simply thrown onto the roof due to the volume of the sound from the impact. "It sounded like it was coming straight down," he said. "I'll bet we heard it coming from at least 100 yards." Read More UFO reported in Washington state Police: Suspect spit feces at officer All-chicken roasting TV set for Canada Bologna lollipops at the ballpark?