![\"A](\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2026\/06\/9e545092ada3fd34e7f63db1e47b3a9a95d52c38.jpg\")
Camera IconA Rockingham workman talks about accused killer Simon Carman. Credit: Sandra Jackson\/The West Australian<\/p>\nNew details have emerged about the Perth man accused of murdering a teenager in Thailand and stuffing her body into a suitcase, with neighbours stating he was often embroiled in arguments, bragged about owning guns and was known to sleep the entire day.<\/p>\n
It comes as a trail of messages posted online show how Simon Peter Carman pursued and critiqued the appearance of multiple women before he was charged over the death of 17-year-old Tunchanok Donhomla.<\/p>\n
The Thai girl\u2019s body was found dumped in a suitcase near a set of railway tracks on Friday night more than 4km from the Australian\u2019s Pattaya hotel.<\/p>\n
Local police allege the 45-year-old engaged the girl for sexual services before a dispute erupted over payment.<\/p>\n
Mr Carman \u2014 who grew up in Jerramungup, 440km south east of Perth and lived in both Albany and Rockingham \u2014 is currently in custody in Thailand awaiting a court appearance on four charges, including murder and concealing a body.<\/p>\n<\/p>\n
Several neighbours who worked near a set of Rockingham industrial units \u2014 which Mr Carman was living out of \u2014 said the accused killer had been in Thailand since late last year, around the time he was listed for sentencing in a WA court.<\/p>\n
A former Rockingham neighbour of Mr Carman, who didn\u2019t wish to be named, said the accused told several people he was moving to Thailand for back surgery after dealing with injuries from motor vehicle accidents.<\/p>\n
\u201cThe main reason he went to Thailand was to get surgery, because no one would do it,\u201d the neighbour said.<\/p>\n
\u201cI\u2019m not sure if it was a motorbike accident first where he broke his neck or it was the truck accident where he had pins inserted in his spine, and that\u2019s what he believed was causing him the pain and the medical problems.<\/p>\n
\u201cI know that he couldn\u2019t get his medical conditions sorted here \u2014 he spent many years trying to, and so he made inquiries overseas about trying to get help over there.<\/p>\n
Camera IconA Rockingham workman talks about accused killer Simon Carman. Credit: Sandra Jackson\/The West Australian<\/p>\n
\u201cThat\u2019s where he believed he could get these pins removed, because he thought they were causing him the troubles.\u201d<\/p>\n
The neighbour said Mr Carman was surviving on funds from a disability pension before moving to Thailand.<\/p>\n
He claimed the former fuel truck driver was running errands for nearby tenants free of charge while staying in Rockingham, including mechanics, before he left Australia.<\/p>\n
Mr Carman was previously living in the southern suburb of Casuarina, where neighbours told The West Australian that he mostly \u201ckept to himself\u201d.<\/p>\n
Another claimed Mr Carman had been previously seen with a shotgun while living in the suburb.<\/p>\n
The neighbour described the accused killer as the \u201csecond owner\u201d of a dog he used to walk weekly to try and lose weight when living in Rockingham.<\/p>\n
\u201cHe used to take the dog out to keep himself fit because he wasn\u2019t working. He just wanted to try and lose weight, because the medication was causing him to it put on.\u201d<\/p>\n
The accused killer is understood to have had multiple interactions with WA Police before his arrest by Thai immigration officers on Friday night.<\/p>\n
The State Administrative Tribunal\u2019s register of proceedings show that Mr Carman was aggrieved by a WA Police decision to cancel his firearms licence in May 2023.<\/p>\n
After lodging an application with the SAT, a decision was made in July 2024 which ultimately swayed in the police\u2019s favour to cancel the licence.<\/p>\n
An old Facebook profile picture shared by Mr Carman shows him parading what appears to be a shotgun.<\/p>\n
![\"Tunchanok](\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2026\/06\/d411056c6cb9fa7c57ada494fb91499c800d1e08.jpg\")
Camera IconTunchanok Donhomla, 17, was last seen entering a hotel in Pattaya, a coastal city on Thailand’s Gulf coast, just after 3.30am on Thursday, local media reports. Credit: The Pattaya News\/The Pattaya News<\/p>\n
The document says he notified authorities of two addresses around Bangkok, one associated with a recent arrival and another as a temporary residence.<\/p>\n
Mr Carman is understood to have been born in Ballarat before growing up in Jerramungup, about 440km south-east of Perth. He later lived in Albany before settling in Rockingham.<\/p>\n
He is currently locked up in a Thai prison awaiting a court date on four charges after the body of Ms Donhomla was found stuffed inside a black suitcase.<\/p>\n
![\"Tunchanok](\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2026\/06\/dcc90f97f99d4e99f1397873ae57604106036973.jpg\")
Camera IconTunchanok Donhomla\u2019s body was found dumped in a suitcase near a set of railway tracks on Friday night more than 4km from the Australian\u2019s Pattaya hotel.\u00a0 Credit: The Pattaya News\/The Pattaya News<\/p>\n
She was found in a grassed area near railway tracks more than 4km from the Australian\u2019s Pattaya hotel.<\/p>\n
Investigators allege Mr Carman and Ms Donhomla had agreed on 1000 baht (about $43) for sex before Mr Carman offered only half that amount.<\/p>\n
CCTV captured the pair walking hand-in-hand through the foyer of Mr Carman\u2019s apartment building and into a lift at 3.34am on Thursday.<\/p>\n
![\"Simon](\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2026\/06\/3f52cdafd675ad13784e6c335eb69f9f02652fa7.jpg\")
Camera IconSimon Carman faces charges of murder, concealing a body, moving or destroying a body, and an offence relating to taking a minor aged between 15 and 18 for sexual purposes. Credit: The Pattaya News\/The Pattaya News<\/p>\n
Late that evening, the Australian was allegedly filmed leaving the hotel alone and pulling a suitcase stuffed with the girl\u2019s body.<\/p>\n
He was arrested on Friday night moments before he was due to board a Jetstar flight to Perth. Police had received a missing person report about the girl before she was captured on the Australian\u2019s hotel CCTV.<\/p>\n
Mr Carman faces charges of murder, concealing a body, moving or destroying a body, and an offence relating to taking a minor aged between 15 and 18 for sexual purposes.<\/p>\n
If convicted of murder in Thailand, he could face life imprisonment or the death penalty.<\/p>\n