Police claim family or friends of four women missing since the 1970s had called to say they recognized loved ones in photos found in Alcala's storage locker when he was arrested.
Authorities released more than 100 photos last week after a jury recommended death for Alcala for the killings of four women and a 12-year-old girl in the late 1970s.
Detectives are now reviewing cold cases nationwide.
To view the series of photographs, click here.
