On the 29th July 1979 Sutcliffe was again interviewed after his black Sunbeam Rapier had been printed out, first as a “Double Area Sighting” and later as a “Triple Area Sighting”, having been seen in the "red light" areas of Leeds, Bradford and Manchester.
Detective Constables Andrew Laptew and Graham Greenwood visited him at his home. It is unfortunate that they were not aware that Sutcliffe had already been interviewed in connection with the £5 note inquiry and also in connection with the "Double Sighting" of his earlier vehicle.
Sutcliffe gave explanations for having been in Leeds and Bradford but denied that he had been to Manchester in his own vehicle. Because of the police decision to keep the "red light" area observations secret, investigating officers were advised not to challenge those whom they interviewed in respect of any individual sighting but were required to approach the subject obliquely.
Sutcliffe again denied making use of prostitutes’ services and was again loosely alibied by his wife. The detectives obtained samples of his handwriting and searched his car and garage, finding nothing to connect him with the murders. They were, however, not satisfied with Peter Sutcliffe and reported their disquiet to the Major Incident Room. Unfortunately the report was not linked with previous papers and Sutcliffe was eliminated because his handwriting did not match that of the Sunderland letter writer.