Complex sentence: After that, he, his wife and his mother-in-law were questioned by the Americans several times, claiming they did not have contact to Joseph Goebbels and had never taken any money from him.
Split into simpler sentences: After that, he, his wife and his mother-in-law were questioned by the Americans several times. During the interrogations all of them claimed that they did not have contact to Joseph Goebbels and had never taken any money from him.