Complex sentence: Despite forensic evidence, police efforts were diverted for several months following receipt of a taped message purporting to be from the murderer taunting Assistant Chief Constable George Oldfield, who was leading the investigation.
Split into simpler sentences: Despite forensic evidence, police efforts were diverted for several months following receipt of a taped message purporting to be from the murderer. The message taunted Assistant Chief Constable George Oldfield, who was leading the investigation.