Complex sentence: Ken Kratz, the former Calumet County district attorney who prosecuted Avery, stated that he had not been able to give his side of the story and that in 2013 Demos and Ricciardi denied him an opportunity for an interview.
Split into simpler sentences: Ken Kratz, the former Calumet County district attorney who prosecuted Avery, stated that he had not been able to give his side of the story. Kratz also alleges that Demos and Ricciardi, in 2013, denied him an opportunity for an interview.