Complex sentence: The witness said he wanted to clear his conscience and die in peace and that is why he had asked to declare in court, emphasizing that it was the Ministerio Público and the CICIG who had pressured him into lying.
Split into simpler sentences: The witness said he asked to declare in court because he wanted to clear his conscience and die in peace. He emphasized that it was the Ministerio Público and the CICIG who had pressured him into lying.