BANGKOK: -- Ten workers died of suffocation and fifteen others injured in a dangerous chemical accident at the basement of the SCB Park building on Sunday night, said the Erawan emergency center.

Meanwhile, Siam Commercial Bank said there was no fire at the SCB Park building as earlier reported but a huge amount of smoke which emitted out of the basement of the building was caused by chemical reaction after workers of a contractor accidentally struck the chemical-based fire extinguishing system as they were moving carpet into the building.

The thick blanket of smokes prevented the workers from getting out of the B2 basement because there is a special exit and the workers might not be familiar with the exit.