Complex sentence: Bianchi was never charged with the alphabet murders, and he has repeatedly tried to have investigators officially clear him from suspicion; however, there is circumstantial evidence that his car was seen at two of the murder scenes.
Split into simpler sentences: Bianchi was never charged with the alphabet murders, and he has repeatedly tried to have investigators officially clear him of suspicion. However, there is circumstantial evidence that his car was seen at two of the murder scenes.