6 bodies were found in a Bangkok hotel room with no signs of violence. Police think they know why

BANGKOK (AP) — Should visitors to Thailand be concerned about their safety after six people were found dead in a locked hotel room in Bangkok?

Thai authorities were quick to stress they believed the incident involved a personal dispute and did not reflect any threat to foreign visitors.

Thai police believe the six — four Vietnamese nationals, and two U.S. citizens of Vietnamese heritage — died of cyanide poisoning motivated by a dispute over an investment. Forensic evidence and...