Suspect in serial killings murdered people with matching initials

A 77-year-old man has been charged with four murders spanning 20 years amid bizarre claims the victims were targeted because their first and last initials were the same.

Photographer Joseph Naso was charged after investigators searched his home and found evidence linking him to murders across Northern California.

Roxene Roggasch, 18, was found murdered in 1977, Carmen Colon was discovered a year later and Pamela Parsons and Tracy Tafoya were killed in 1993 and 1994 respectively.

Detectives in California say they do not know if the alliterative initials are merely coincidence or part of the pattern of a serial killer.