A police officer with a sniffer dog arrives in the backyard of a house in Amstetten where Josef Fritzl imprisoned his daughter for 24 years, in eastern Austria May 8, 2008. Fritzl, a 73-year-old electrical engineer, lured his daughter Elisabeth into a basement in 1984, drugged her and locked her up before abusing her for almost a quarter of a century and fathering her seven children. Three of the children remained locked up with their mother in the basement and never saw sunlight until their fate was revealed nearly two weeks ago. REUTERS/Herbert Neubauer (AUSTRIA)