Cyanide traces found in victims' blood

BANGKOK — Initial autopsy results showed traces of cyanide in the blood of six Vietnamese and US guests at a central Bangkok luxury hotel and one of them is believed to have poisoned the others over a bad investment, Thai authorities said on Wednesday.

The bodies were found on Tuesday in the Grand Hyatt Erawan Bangkok, a landmark at a central intersection in the capital busy with malls, government buildings and public transit.

"We are convinced that one of the six people found dead committed this crime," Noppasil Poonsawas, a deputy commander of the Bangkok police, said.