A U.S. diplomat was found murdered last month in a luxury hotel in Yangon, Myanmar, with authorities accusing his ex-wife of the killing. Daniel Riva, 43, a native of East Norwich, New York, and an expert in combating international organized crime, was discovered dead at the Sakura Residence & Hotel, located about a mile from the U.S. Embassy where he worked.

Local officials have charged Pavinee Supasirivisan, a Thai national and Riva’s former spouse, with murder. She allegedly stabbed Riva in the head and neck. Following her arrest, Pavinee faces prosecution under Myanmar’s immigration laws, which impose penalties on foreign nationals who commit crimes within the country. She appeared in court on Tuesday for the immigration violation charge, which carries a possible sentence of up to five years in prison, prior to trial on the murder accusation.

If convicted of murder, Supasirivisan could face a minimum sentence of 10 years and potentially the death penalty, according to local legal authorities.

Riva and Supasirivisan were married in June 2018. Pavinee worked as a pastry chef. The timeline and circumstances of their separation have not been disclosed. Before his assignment in Myanmar, Riva held diplomatic posts in Suriname and East Timor.

The investigation remains ongoing as Myanmar authorities prepare for the upcoming trials against Supasirivisan.