A truly bizarre murder case. Police building their casq against a young woman accused of killing her wealthy mom. It's all happening on the island paradise in Bali. The suspect is a teenager from... See More
A truly bizarre murder case. Police building their casq against a young woman accused of killing her wealthy mom. It's all happening on the island paradise in Bali. The suspect is a teenager from Chicago, along with her boyfriend. And police say, they stuffed the mother's body into a suitcase then &eft it in the back of a ABC news' Linzie Janis here with more. Reporter: The young Chicago woman and her boyfriend have now been officially charged with murder. The morning, Indonesian police are awaiting the results of an autopsy. The girl's mother may have fought back while being bludgeoned to death. This morning, 19-year-old heather mack has swapped her suite up a the upscale St. Regis hotel for a jail cell. No cameras. Reporter: Mack and her boyfriend, 21-year-old amateur rapper, tommy Schaefer are charged with the death of her mother the couple are accused of )r&ling her last Wednesday then stuffing her half naked body in this blood-stained suitcase. Police say they put it in a taxi saying they would be right back but never returned. Authorities tracking them down later that day at another hotel. The young couple seen here being fingerprinted, telling investigators they had been kidnapped by P' armed gang. She's innocent. We'll prove that, by the logistics of what is occurring at this time,ky not talk about. Reporter: In a statement obtained by ABC news, mack's lawyer says the teen is two months pregnant. Mack grow up in this suburban mansion. Former neighbors saying the relationship between mother and daughter was always rocky. 86 times in the last ten years. Mostly domestic disturbances. Every family has its issues. You hoped this move would make things better. Reporter: Mack's boyfriend also had a difficult home life according to his former instructor. He didn't have a place to sleep. He was going back and forth between friends' houses or couches. We had no idea that tommy would ever have his name next to the word murder. Reporter: Police say they have footage of the woman a'd her daughter arguing hours before the murder. If convicted, both mack and Shaefer could face death by firing squad.
This transcript has been automatically generated and may not be 100% accurate.