At a press conference held earlier the same day, Thai police also said cyanide was found in all coffee cups at the scene, and one of the six is believed to have poisoned the others over debt issues.
According to the police, one person killed five others in the room then took their own life. It is understood the killings stem from debt-related issues.
Authorities have installed barriers around bridge railings, in addition to putting more focus on mental health counselling to try and deter those who think of taking their own life.
