Cyprus police have arrested a Russian woman and are seeking Interpol’s help to track down a Colombian man in connection with the Latvian woman’s death.

Cyprus police said August 30 it’s the first time that they’ve come across the illegal drug dimethyltryptamine, or DMT, in Cyprus.

The drug was used by a group of 20 mostly foreign nationals during Tuesday’s ceremony that’s known as “ayahuasca” and is said to be practiced by indigenous people in the Amazon.

The 42 year-old Colombian man who is believed to have supplied the drug left Cyprus shortly after the ceremony that took place in the coastal town of Larnaca.

The 50 year-old Russian woman is believed to be a ceremony organizer.