Complex sentence: On 14 November 2014, police raids spanned six states and netted prominent Brazilian politicians and businessmen--including some Petrobras directors--who were placed under investigation in regards to "suspicious" contracts worth $22 billion.
Split into simpler sentences: On 14 November 2014, police raids in six states and netted prominent Brazilian politicians and businessmen, including some Petrobras directors. They were investigated in regards to "suspicious" contracts worth $22 billion.