The Australian Federal Police (AFP) and NSW Police Force are seeking public assistance to identify a person believed to be responsible for writing more than 100 letters over the past decade to a wide range of high-profile recipients, including federal and state parliamentarians, religious organisations and community leaders.
The correspondence, sent between 2015 and 2026, includes material that investigators say may constitute harassing or threatening behaviour. Police have seized the letters and subjected them to forensic examination as part of an ongoing investigation.

NSW Police’s Security Investigation Unit is leading inquiries under Strike Force Yewrangara, while the AFP’s National Security Investigations team is separately examining correspondence sent to federal parliamentarians and community groups.
As part of the investigation, police have released images of handwritten samples believed to be linked to the author. The writing is described as distinctive, with prominent capitalisation of the letters “F”, “L”, “T”, “N” and “H”. Investigators also say the writer has referred to themselves as “Scorpio” or “Bullit”.


The letters reportedly contain newspaper clippings, headlines and images of public figures, with much of the content focused on national affairs and matters of public interest.
AFP Superintendent Nathan Robertson said police were concerned about the nature of the correspondence and the potential risk it may pose.
“We have very real concerns about the content of these letters, and people in public life deserve to go about their jobs or careers without being subject to harassment or threats,” he said.
He added that while the investigation focuses on alleged criminal behaviour, police also hold concerns about whether the individual may require access to appropriate health and support services.

NSW Police Acting Superintendent John Walke said investigators were closing in on the offender but needed help from the public to identify them.
“We believe the offender is of Caucasian appearance and in his 60s, so we are appealing to the community if they recognise any of the symbols or names in the letter excerpts and can relate them to someone of that profile to please let police know,” he said.
He said police were determined to locate the person responsible, citing the offensive and at times threatening nature of the correspondence.
Anyone with information or who recognises the handwriting has been urged to contact Crime Stoppers or the National Security Hotline.
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