The son of a municipal chief in Mae Sot in North West Thailand has died after being infected with the H1N1 virus, a hospital director has confirmed.

Thai Rath reported that the virus was currently an epidemic across the border in Myanmar.

Noppaporn Khamyaeng, 38, the son of Singkharn Khamyaeng chief of Dan Mae Lamao in Mae Sot died when his heart stopped after being sent home from hospital.

Director of Mae Sot hospital Dr Suchart Porncharoenpong in giving his condolences to the family defended the hospital saying that it was a very unusual case of a man's heart stopping due to the virus.

Noppaporn had gone to the hospital with high fever, sore throat and cough.

Dr Suchart said he was sent home after receiving the appropriate treatment including an X-ray that showed everything was normal in his lungs.