Jeffrey Allen Keller is a RSO. Keller has an MO and it's sneaking into ladies rooms and waiting on women to come in and use the facilities. Then he takes out his handy dandy mirror the pervert.
Keller was in the Bothell library which according to this article is a very busy facility. He'd wait until a woman would go into the bathroom and then go into a stall and put a mirror under the door.
Posted bail. Out on the street. Scary man.