BANGKOK, March 23 – Excessive levels of cancer-causing agents are being found in Thailand’s urban areas such as Bangkok and the metropolitan region, as well as in urban centres such as Chiang Mai, Khon Kaen, Songkhla and Rayong, according to the Pollution Control Department (PCD).

PCD Director-General Wijarn Simachaya said three types of volatile organic compounds (VOCs) have been found is rising concentrations in Thailand’s urban areas for several years. He described the emergence of the compounds as worrisome.

Read more: MCOT