Hong Kong activist Joshua Wong was detained by Thai authorities Wednesday shortly after arriving in the kingdom to give a speech about his campaign for democracy.

In his most recent cartoon for CDT, Badiucao honors Hong Kong democracy activist Joshua Wong, who was recently detained by Thai authorities at the Bangkok airport on his way to talk to college students in the city.

He was denied entry and escorted onto a plane back to Hong Kong, he told reporters on arrival after writing that he was "illegally detained" on his Facebook page.

Thailand's Nation newspaper quoted a deputy commander of airport immigration police, Colonel Pruthipong Prayoonsiri, as saying China had sent a request "to seek cooperation to deny" Mr Wong entry. The government said it was aware of Mr. Wong's activity in "resistance movements against other foreign governments" and cited concern his activities in Thailand "could eventually affect Thailand's relations with other nations".

Mr Wong was invited to speak to students on the 40th anniversary of a brutal massacre of students at Thammasat University, an event largely buried in Thai history.

"The detention and deportation of Joshua Wong is yet another indicator that Thailand's military government will use any available means to stifle political discourse in the country", Champa Patel, Amnesty International's Senior Research Adviser for South East Asia and the Pacific, said.

Demosisto, which was founded earlier this year, advocates a referendum on "self-determination" on the future status of Hong Kong, which is in the middle of a 50-year transition period to Chinese rule.

Wong travelled to Japan and Taiwan prior to arriving in Thailand for the Oct 6 event, Netiwit said.

He said he didn't believe that Wong's denial of entry was linked to state-to-state pressure, but was linked to the Thai government's own "management" of people entering the country on tourist visas.

Nathan Law, a newly elected Hong Kong lawmaker and a member of Wong's Demosisto party demanded an apology from the Thai government at the same briefing. He was immediately returned to Hong Kong.

In August, a Hong Kong court sentenced him to community service for his role in the protests.

"Thailand's arrest of Joshua Wong, a well-known pro-democracy activist in Hong Kong, sadly suggests that Bangkok is willing to do Beijing's bidding".

Wong's detention comes nearly a year after Hong Kong bookseller Gui Minhai disappeared in Thailand. He said that he and the party were indebted to their friends in Thailand.

Thailand's military regime has a track record of obliging Beijing by deporting to the mainland those who have run foul of the Chinese authorities.

Joshua Wong, who will turn 20 this month, won global fame as the leader of the "umbrella protests" which shut down Hong Kong's central business district for more than 10 weeks in 2014, in a challenge to Beijing's efforts to control elections.

The Thai Foreign Ministry said in a statement permission for Wong to enter Thailand "involves various factors". The student, Netiwit Chotipatpaisal, who is also a political activist, said he was informed of Wong's detainment by tourist police at the airport.

"We will not give up the fight for democracy and the fight against the Chinese government which disrespects human rights".

"In the meantime, we request the Hong Kong Immigration Department's assistance in assuring Wong's safety", the party's statement warned.