A stalker writing sexually-explicit letters and making inappropriate phone calls to women working in Surf Coast businesses could be a local, according to police.
Police in July released CCTV images of the unknown offender, who has handwritten about 20 graphic letters to businesses at Coburg, Torquay and Essendon.
Fawkner Sexual Offences and Child Abuse Investigation Team detectives began investigating the case after the man sent sexually-explicit handwritten letters to several businesses in January 2018.
Recently the man had made inappropriate calls from pay phones in the Melbourne and Surf Coast areas to female staff members at the same businesses.
One call originated from a pay phone at Airport West on 9 May, police said.
Since police appealed for information from the public in July, the offender had continued to write explicit letters to the businesses, investigators said.
Originally police advised that the man could be frequenting Anglesea and the rest of the Surf Coast.
But now detectives believe the man could be an Anglesea or Surf Coast resident.
Police have described the letters as about 10 pages long.
They believe the man has made follow-up phone calls for sexual gratification and has targeted the same victims multiple times.
The man has a deep voice, an Australian accent and is well-spoken, based on police recordings of some phone calls.
Police urged anyone with information about the incidents to phone Crime Stoppers on 1800 333 000 or visit www.crimestoppersvic.com.au.
