Former Nazi concentration camp guard who lived in the United States for over 60 years returned to Germany on Saturday after being expelled, a police spokesman said. The 95-year-old man faced questioning by local police after arriving at Frankfurt airport. He was not arrested though. US Justice Department officials have named him as Friedrich Karl Berger, while Germany authorities refer to him only as Friedrich Karl B. A US court last year ruled that Berger should be expelled after prosecutors in the northern German town of Celle opened an investigation into whether he was involved with the murder of prisoners at a satellite concentration camp near Hamburg in 1945.