Complex sentence: He later admitted that some of his controversial rulings in Dunne's case "pained" him but reiterated his belief that Sweeney should have been convicted of murder and given a lengthier sentence.
Split into simpler sentences: He later admitted that some of his controversial rulings in Dunne's case "pained" him. He reiterated that he believed that Sweeney should have been convicted of murder and given a lengthier sentence.