World Trade Center shopping mall, but left separately after a disagreement. The police remained suspicious of his claims, and followed him and called him in for further questioning several times over the following weeks, also subjecting him to polygraph tests. They found that he provided contradictory and false statements, but failed to find physical evidence in his apartment, where he continued to live. The police eventually tracked down the witnesses who reported on Serm's suspicious activities at his friend's house and his Chon Buri home, and brought him into custody on 5 March. He confessed to killing Jenjira, claiming to have strangled her in her car at the mall in a fit of jealousy, and then, in fear of being caught, checked in to a love motel where he dismembered and disposed of her body through the toilet. He revealed the locations where he left her car, which was found by the police, and where he disposed of the bones, though police scuba divers were unable to find any remains. However, the investigation team was informed by the Institute of Forensic Medicine (IFM) of two unidentified human skulls earlier found in the river and reported to the local police. Craniofacial superimposition of one of the skulls, which had been found by fishermen on 28 January, found it compatible with Jenjira's features, and dental identification and DNA analysis would later confirm that the skull was Jenjira's. However, the skull exhibited a gunshot wound, contradicting Serm's statements. Investigation of the motel's septic tank also failed to reveal any evidence. Following further interrogation, Serm altered his confession twice over the few following days, first revealing that he killed Jenjira and dismembered her body at his own apartment, then that he used a gun to kill her, which he hid at his Chon Buri home. The gun was recovered, and investigations of the apartment's septic tank revealed numerous pieces of human flesh, which were found to match Jenjira's DNA. The case was the first instance in Thailand of forensic DNA analysis being used in a murder investigation. A lot of public attention fell on forensic pathologist Porntip Rojanasunan, whose riotous hairstyle became a sensation amidst the intense media coverage of the investigation. The case had been brought to her attention as a lecturer at Ramathibodi who was overseeing student issues, and as Ramathibodi's forensic unit regularly collaborated with the police IFM, she served as