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Thai police investigate if Australian man charged over 17-year-old girl’s murder linked to other unsolved cases

Thai Police Investigate Australian Man Over 17-Year-Old Girl’s Murder Case Thai police investigate if Australian man charged - Thai police are now examining

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Published June 30, 2026
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Thai Police Investigate Australian Man Over 17-Year-Old Girl’s Murder Case

Thai police investigate if Australian man charged – Thai police are now examining whether the Australian man charged with the murder of a 17-year-old girl is connected to two other unresolved killings in the region. The inquiry, spearheaded by Colonel Anek Srathongyoo, superintendent of Pattaya City’s police station, aims to uncover potential links between the cases, though no conclusive evidence has been found yet. Srathongyoo shared with the Guardian on Tuesday that the investigation is still in its early stages, emphasizing the need to analyze the similarities in the crime scenes. The case has sparked renewed interest in regional unsolved murders, particularly those involving women found in suitcases.

Allegations Against the Australian Suspect

The 45-year-old Simon Peter Carman is accused of murdering Thunchanok Donhomla, a 17-year-old girl from Kalasin province, after she was discovered in a suitcase near railway tracks in Pattaya. The body was found on Saturday morning, with her personal belongings recovered from the same location. Carman has denied the charges, claiming he was unaware of her whereabouts at the time of her death. CCTV footage from Jomtien Beach, where Carman rented a condo, shows Donhomla walking hand in hand with him on Thursday, followed by his departure to buy food. Her body was later found in the suitcase, raising questions about the sequence of events.

“We’re looking for patterns, but the timeline is still unclear,” Srathongyoo said. “Carman’s movements on the day of the incident are under close review, and we’re connecting them to the previous cases.”

Similarities in the Unsolved Murders

Over the past two years, two other murders in the region have involved women whose bodies were discovered in suitcases, mirroring the current case. Srathongyoo highlighted the commonality in the crime scenes, noting that the victims were likely from the adult entertainment industry. The latest incident in the Huay Yai district and another in Ban Chang district share the same modus operandi, prompting collaboration between police departments. While the earlier cases were not under Srathongyoo’s jurisdiction, the similarities have made cross-district investigations necessary.

“These cases are challenging, but the recent discovery has given us a new lead,” Srathongyoo explained. “The lack of physical evidence in the first two cases made it harder to draw conclusions, but this incident provides more context.”

Victim’s Background and Potential Witnesses

Thunchanok Donhomla, known as “Cake,” had only recently arrived in Pattaya to visit a friend. Police are investigating whether one of her friends, from the same village, might have ties to the sex industry. A video recorded by the friend shows Donhomla walking with Carman along the promenade, potentially offering key insight. Additionally, the last messages on Donhomla’s phone indicate she arrived at the condo and described the area as “messy,” suggesting a possible struggle before her death. These details are being scrutinized to build a clearer narrative.

“The video and messages add context, but we need more proof to confirm the Australian man’s involvement,” Srathongyoo said. “His account of events conflicts with the CCTV footage, which is why we’re treating this as a priority.”

Carman’s Visa Status and Previous Behavior

Carman entered Thailand on a tourist visa in December and extended his stay. Police confirmed there is no record of him overstaying or having a prior criminal history in the country. However, his arrest at Suvarnabhumi airport in Bangkok on Friday, as he attempted to leave, has intensified the investigation. During questioning, he initially claimed Donhomla had left the condo unaided while he slept. When confronted with the suitcase containing her body, he admitted to killing her after an argument, though this statement is still being verified.

“The medical report indicates suffocation as the likely cause of death,” Srathongyoo stated. “This aligns with the circumstances of the other cases, but we’re still piecing together the full story.”

Broader Impact on Regional Investigations

The case has prompted a broader review of unsolved murders in Thailand, with authorities emphasizing the need for collaboration between districts. Srathongyoo noted that the three incidents—two previously unsolved and the current one—highlight a possible trend in the area. The police are now prioritizing the investigation to determine if the Australian man’s actions are part of a larger pattern. This focus on linking cases could lead to more arrests and a better understanding of the crime’s origins.

“We’re not just looking at individual cases anymore; we’re analyzing potential connections across the region,” Srathongyoo added. “This investigation could uncover a network of crimes involving the Australian man and others.”

Next Steps in the Thai Police Investigation

Thai police are expected to intensify their efforts in the coming days, including interviews with witnesses and forensic analysis of the crime scene. The investigation will also examine Carman’s financial records and any potential motives for the murder. As the case unfolds, officials are urging the public to provide any information that could help clarify the timeline and link the incidents. This ongoing probe may not only resolve the current murder but also shed light on a series of unsolved cases that have plagued the region for months.

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