LOS ANGELES (KTLA) — The Canadian woman last seen at a downtown hotel nearly three weeks ago was found dead in a water tank at the top of the building Tuesday, the Los Angeles Times is reporting.The Timessays a worker at the Cecil Hotel on Main Street discovered the body of Elisa Lam, 21, about 10 a.m. while responding to a complaint about low water pressure, sources said.Elisa Lam of Vancouver, British Columbia was last seen at the Cecil Hotel on 640 S. Main Street January 31.Lam, who was traveling alone, had been in contact with her parents daily until her disappearance.Lam's body was found in one of four tanks that supply the hotel with water.The location is being treated as a crime scene but sources familiar with the case said it was too early to tell whether Lam was the victim of foul play.Lam, of Vancouver, Canada, arrived in Los Angeles onJan. 26 and was last seen Jan. 31 at the Cecil Hotel at 640 S. Main St, police said.Lam's final destination was believed to be Santa Cruz; her reasons for visiting California were unclear.