Australian Federal Police (AFP) and New South Wales Police are appealing for help in tracking down the mystery author of more than 100 letters, some threatening, sent to high-profile community figures. This was reported by Qazaqyia.kz citing The Guardian.

The author used the aliases 'Scorpio' and 'Bullit'. Police say the letters were sent to state and federal parliamentarians, religious organisations and community leaders from 2015 to 2026. Some letters constituted threatening or harassing behaviour.

Police have seized the letters and conducted forensic examination. NSW Police are investigating under Strike Force Yewrangara, while the AFP is looking into letters sent to federal parliamentarians and community groups. Their priority is to prevent any 'escalation' into behaviour that could endanger the community.

AFP Superintendent Nathan Robertson said on Tuesday: '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.'

Police have released excerpts of the letters in the hopes the public can help identify the author by their distinctive handwriting style. Among the clippings is a menacing smiley face with impressions left by bullet casings for eyes above the signature 'Scorpio'. The author has also referred to themself as 'Bullit' and often capitalises the letters 'F', 'L', 'T', 'N' and 'H'.

While the author's identity remains a mystery, police believe the offender is a man of Caucasian appearance in his 60s. Robertson added: 'Our investigations are into allegations of criminal behaviour, but we also have concerns about whether the person responsible for them has access to appropriate health and support services.'

Police urge the public to assist in identifying the handwriting.