A man was rescued from a sewer in Ratchathewi district of Bangkok on Saturday, after reportedly being trapped for four days.

The Amarin radio centre received a report at 1.47pm that a man, aged about 40-50, had been found trapped in a sewer in Phetchaburi Soi 2.

Rescuers opened the covered sewer pipe and lowered a ladder to help the man to safety.

Bystanders were heard shouting that the man had fallen in about four days earlier.

He has been taken to Petcharavej Hospital for medical attention.

The man was found trapped in the sewer after a passer-by heard him calling for help, police said.

The man was identified as Yosakorn Jannamsai, 44, from Chaiyaphum province.

Mr Yosakorn told police that he had hidden in the pipe to evade someone who was chasing him. He has no criminal record and works as a security guard, police said.