Jakarta: A young woman and her boyfriend may face an Indonesian firing squad after allegedly killing the woman’s mother and stuffing her body into a suitcase in a luxury Bali resort.

Heather Mack, 19, and boyfriend Tommy Schaeffer, 21, underwent physical testing today as Bali police chief Benny Mokalu said the charges might be upgraded because “I am leaning more towards thinking the murder was premeditated”.

Heather Mack in custody in a police station in Denpasar. Credit:Reuters

“Why premeditated? Because the victim was stuffed into a bag. It shows planning,” Mr Benny said.

The American couple have still not been questioned because they are waiting for a lawyer. But Mr Benny said: “Even without confessions or a statement, based on the evidence collected — which includes CCTV footage, fingerprints, the items used, the bag — it all points to them as the perpetrators.”