Complex sentence: The youth's wrists had been knotted behind his back in much the same manner as victim Michael O'Fallon had been two years previously, and he had been strangled to death with his own shoelace.
Split into simpler sentences: The youth's wrists had been knotted behind his back in much the same manner as victim Michael O'Fallon had been two years previously. Davis had apparently been strangled to death with his own shoelace.