Forensic evidence led Bringing police to her killer , John Taylor , who lived only 1,300 yards from Tiernan 's home .

Forensic evidence quickly linked Connect McVeigh and Nichols to the attack ; Nichols was arrested Arrest , and within days , both were charged Judgment_communication .

Forensic examination Scrutiny showed Presence they had been read and Ultra decrypts of German messages showed Presence that the Germans fell for the ruse .