Complex sentence: After the shooting, four men from Tucson, referred to as the "Tucson Four", were initially charged with the crime and gave confessions, but later recanted and were exonerated when it was discovered they had nothing to do with the crime.
Split into simpler sentences: After the shooting, four men from Tucson, referred to as the "Tucson Four", were initially charged with the crime and gave confessions. Afterwards, all four were exonerated when it was discovered they had nothing to do with the crime.