HAMBURG, GERMANY - SEPTEMBER 1: (FILE PHOTO) Children walk outside The Imam-Ali mosque at the Aussenalster on September 1, 2005 in Hamburg, Germany. While one suspect had been arrested on August 19, 2006, the second one remains at large. The two are suspected to have planted powerful bombs on commuter trains near Koblenz and Dortmund that would have detonated had it not been for a technical failure in each of the bombs' construction. (Photo by Nadine Rupp/Getty Images)