Officials investigated a deceased woman found beside a condominium in the Udomsuk area. Her body was severely damaged, with two slash wounds on her neck. Records showed she was involved in the 2021 murder of a Muay Thai teacher and had an arrest warrant after failing to attend her court sentencing.
At 00:13 on 19 Dec 2025 GMT+7, Police Sub-Lieutenant Anon Kaththaisong, deputy investigator at Bangna Police Station, received a report of a woman who fell from a height and died inside a condominium on Udomsuk Road, Bangna Nuea Subdistrict, Bangna District, Bangkok. He informed his superiors and went to the scene with Pol. Col. Surapong Sukyaem, chief of Bangna Police Station; Pol. Lt. Col. Kiattisak Thinrat, patrol supervisor; investigative officers; forensic team; medical examiners from Chulalongkorn Hospital; and volunteers from the Ruamkatanyu Foundation.
The scene was a high-rise building. Beside the building, the body of Ms. Ploypailin, 36, who lived on the 35th floor, was found lying face-up in a pool of blood, wearing a black long-sleeve T-shirt and black pants. Her body was severely damaged, with two slash wounds on her neck. Nearby, a blood-stained folding knife about six inches long was found and collected as evidence. Officers then checked her apartment, finding no signs of a struggle but discovering some antidepressant medication.
During questioning, Mr. Natthapong, 35, a friend of the deceased, said that at around 23:45, he received a call from the victim's uncle. The uncle said the victim called to say goodbye before hanging up, and then she was unreachable. He asked for help to check on her. Upon arriving at the building, he found that his friend had died.
Records showed that Ms. Ploypailin was involved in the stabbing murder of Mr. Wichan, also known as Kru Daeng Malithong, 46, a Muay Thai teacher nicknamed “Wichan Noi Sit Je Payao.” He was found dead beside a car in the jurisdiction of Prawet Police Station on the night of 21 Feb 2021. She had an outstanding arrest warrant from the Phra Khanong Criminal Court for failing to attend the initial court sentencing.