Complex sentence: His release followed the confession by Willard E. Brown to the crimes, who was arrested in 2003 after a database review that year found that his DNA matched the DNA evidence of the perpetrator collected in the Sykes case.
Split into simpler sentences: His release followed the confession by Willard E. Brown to the crimes. He had been arrested in 2003 after a database review that year found that his DNA matched the DNA evidence of the perpetrator collected in the Sykes case.