Heather Mack, 19, and her boyfriend, Tommy Schaefer, 21, both from Chicago, were arrested in Bali's Kuta area on Wednesday, a day after the body of Sheila von Wiese-Mack was found stuffed inside a suitcase in the trunk of a taxi parked in front of the upscale St Regis Bali Resort in the island's exclusive Nusa Dua section.
An autopsy today found that von Wiese-Mack, 62, died of asphyxiation from a broken nose bone resulting from a blunt blow, said Ida Bagus Putu Alit, head of forensics at Sanglah Hospital in Bali's provincial capital of Denpasar. She also suffered from a broken neck, Alit said.
He reiterated that the couple was still refusing to talk to investigators without the presence of American lawyers.
"But that does not hamper our investigation. We have enough evidence, including CCTV and fingerprints. And I am inclined to charge them with premeditated murder", Utomo said.
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An FBI agent arrived yesterday to help with the investigation, including on the couple's possible involvement in criminal activity in the United States, Utomo said.
"We also found blood aspiration, which meant the victim was standing when assaulted. The conclusion is that the victim suffocated from lack of oxygen because of influx of blood from the broken nose bone," Alit said.
Alit said von Wiese-Mack was believed to have died Tuesday morning. "The victim was last spotted on CCTV at 3:45 a.M. (Tuesday), and three hours later she called receptionists asking to wake her up at 10 am, however, she did not respond when awakened," Alit said.
Von Wiese-Mack, also from Chicago, and her daughter arrived at the St Regis on August 9, while Schaefer checked in on Monday, two days later, according to police. Security camera video showed that the victim had an argument with Schaefer on Monday in the hotel's lobby.