BALI, Indonesia (AP) — An American couple arrested on the Indonesian resort island of Bali in connection with the slaying of the woman’s mother could be charged with premeditated murder, which carries a maximum penalty of death, police said Saturday.

Heather Mack, 19, and her boyfriend, Tommy Schaefer, 21, both from Chicago, were arrested in Bali’s Kuta area 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.