US businesswoman Sherine Chong, 56, suspected of poisoning six compatriots with cyanide-laced tea at Grand Hyatt Erawan hotel in Bangkok.

Two victims were US citizens of Vietnamese descent; autopsies confirmed cyanide as the cause of death, with residue found in teacups and tea bags.

Thai authorities are investigating the deaths as a result of a personal dispute over a failed investment, supported by forensic evidence, security footage, and autopsies.

Chong, a Vietnamese American woman, allegedly had a financial dispute with two other individuals in the room.

Incident is not linked to any threat to foreign visitors in Thailand; governments of Thailand, Vietnam, and the US are cooperating in the investigation.

The FBI may be involved; Chong set to face trial for murder in September 2025.

Thai authorities reassure tourists that the incident should not impact tourism in the country.