Manila: Philippine officials have opened a case against an expatriate worker from Thailand after he posted comments berating citizens of his host country on his Facebook page.

Thai national Prasertsri Kosin, who uses the name “Koko Narak” on his Facebook account, was ordered deported by the Bureau of Immigrations on Tuesday after local netizens complained that he had been hurling insults against Filipinos.

Prasertsri worked for the Taguig City business unit of New Jersey, USA-based process outsourcing firm, Cognizant Philippines.

Reports did not mention how the expat worker had developed an apparent contempt against Filipinos but immigration officials said the Thai national had been figuring controversially in social networking circles for his racially-offensive tirades against Filipinos.

“In his Facebook account … he tagged Filipinos as ‘stupid creatures’, ‘low-class slum slaves’ and ‘useless race in this world,’” the department said.

Immigrations spokesperson Elaine Tan said that, based on their records, Prasertsri is working under a special non-immigrant visa.

“The visa will be eventually cancelled should he be determined to be undesirable, Prasertsri was informed of the deportation charge yesterday,” she said.

According to Tan, Prasertsri will be allowed to present a defence to the charge against him.

“Deportation cases at the Bureau of Immigrations are heard before its Board of Special Inquiry, whose recommendation is deliberated by the Board of Commissioners in the latter’s weekly meeting,” she said.

If he is deported, Prasertsri’s name will be included on the immigration blacklist, barring his re-entry into the country.

Meanwhile, his employer Cognizant fired him on Wednesday.

In a statement posted on its Philippines Facebook page, the firm said it had terminated Prasertsri’s services.

“Following contentious remarks made by Kosin Prasertsri on social media, Cognizant Technology Solutions Philippines, Inc. has taken disciplinary action against him and terminated his services with effect from May 4, 2015,” it said.

“We continue to cooperate with the Bureau of Immigration, Embassy of Thailand, Philippine Economic Zone Authority, and Department of Labour and Employment and will provide all possible support to help resolve the matter,” it said.

The incident marks a rare incident when the Philippines had deported a national from a Southeast Asian country.