By Jörn Poltz MUNICH (Reuters) - The lone surviving suspect in a neo-Nazi murder case that shocked Germany denied on Wednesday having played a role in a seven-year racist killing spree carried out by two of her close friends but she admitted feeling moral guilt for the deaths. Breaking her two-and-a-half-year silence in a closely-watched trial in Munich, Beate Zschaepe said in a statement read out by her lawyer that she had only been informed about the murders after the fact. Prosecutors accuse Zschaepe, 40, of being part of a covert cell called the National Socialist Underground (NSU) that murdered eight Turks, a Greek and a German policewoman between 2000 and 2007, as well as conducting two bombings in immigrant areas of Cologne and 15 bank robberies.