Police in Victoria want to interview a serial killer Peter Dupas over the murder of an elderly woman in 1997.
AAP reports Peter Dupas, 60, who is serving three life terms in prison, has long been a suspect in the killing Kathleen Downes, 95, a nursing home resident in Brunswick, a suburb in northern Melbourne.
The Seven Network reported police will apply for permission to the Melbourne Magistrates Court to interview Dupas on Tuesday.
Dupas is also a suspect in the killings of Helen McMahon in Rye in 1985 and Renita Brunton in Sunbury in 1993.
He was convicted of murdering Mersina Halvagis in Fawkner cemetery in 1997, and of the mutilation murders of Nicole Patterson in April 1999 and Margaret Maher in October 1997.
Kathleen Downes was found dead beside her bed in the Brunswick Lodge Nursing Home where she had lived since 1989.