The ice axe recovered by the Mexico City police was stored in an evidence room for several years until it was "checked out" by a secret police officer, named Alfredo Salas, who claimed he wanted to preserve it "for posterity." He passed it on to his daughter, Ana Alicia, who eventually put it up for sale in 2005. Trotsky's grandson, Esteban Volkov, stated that he is "unconcerned" about the fate of the alleged murder weapon and wondered "if it is the real axe." The ice axe was bought by Keith Melton, an American collector and author of books on the history of espionage, and is now on display at the International Spy Museum, in Washington, D.C..