The Thai army and police Monday arrested at least 21 migrants from Myanmar in the country's south, local media reported.

Among the migrants was a sick person who had not eaten food for the last few days, The Nation, a Bangkok-based daily, said.

The joint operation of Thai forces was carried out at a resort in Tambon Patong of Songkhla’s Hat Yai district in Southern Thailand, the report said.

They also arrested Pongpipat Suwanraksa, a local who was involved in trafficking of the migrants.

The investigations led Thai authorities to search a forest in Moo 1 village of the same area where they found 13 more Myanmar men and one woman.

“They looked tired and hungry. None of them had eaten in three days and some had fallen ill as a result,” it added.

Thailand has been mostly receiving displaced Rohingya population from Myanmar who flee state-led persecution from their country.

Ethnic Rohingya, who are mostly Muslims, cross over to Thailand in order to reach Muslim-majority Malaysia where they intend to live in peace and manage their livelihood.

Amnesty International has estimated that more than 750,000 Rohingya refugees, mostly women and children, fled Myanmar and crossed to Bangladesh after Myanmar forces launched a crackdown on the minority Muslim community in August 2017. The total number of persecuted Rohingya living in Bangladesh is greater than 1.1 million.