Bangkok: At least eight people were killed and seven others injured after fire suppression chemicals were accidentally released at a bank in Thailand's capital Bangkok, the media reported on Monday.

The accident at the Siam Commercial Bank (SCB) Head Office occurred at 9.30 p.m. on Sunday when smoke from the basement prompted the fire extinguishing system of the building to release the gas pyrogens, or flame retardant, killing eight people on the spot when the chemicals "sucked all oxygen from the building", the Bangkok Post reported.