Police are searching for a thief and a con artist who ripped off a grieving family.
Kyle Nolan, 18, died after drinking extracts of a psychedelic plant called ayahuasca during a ritual in the Madre de Dios jungle region of Peru.
Clients and friends of Nolan's mother Ingeborg Oswalo contributed about \$1,000 (£615) to his memorial fund, which was kept in a donation box at her veterinary surgery.
On Wednesday, a receptionist said a toothless woman came into the office and chatted for about 40 minutes.
The receptionist said that after she turned her back to find a brochure, the woman and box were missing.
A day earlier, a man pretending he was Nolan's brother called his grandmother in Los Angeles pleading for \$2,100 (£1,300) to get out of prison on bail.
The caller asked the grandmother not to call any other members of the family, saying he did not want to cause any further upset.
She transferred the money before discovering the scam. Police are looking for suspects in both cases.
Nolan, from northern California, went on a spiritual retreat in the Amazon rainforest about 530 miles east of Lima on August 17.
He was later reported missing and his mother travelled to Peru to appeal for information after police failed to find him.
Shaman Jose Manuel Pineda Vargas, 58, later admitted trying to cover up his death by burying him in the grounds of his retreat. He was arrested with two other men.
