Rights groups are calling for the release of two Chinese democracy activists currently held by Thai immigration authorities after seeking political refugee status with the United Nations. Dong Guangping fled China with his family in September after serving a three-year jail term for subversion from 2001-2004, and being "disappeared" and held for eight months in secret detention in 2014. Political cartoonist Jiang Yefei had been in Thailand since fleeing China in 2008, where he was detained and tortured after he criticized the ruling Chinese Communist Party's handling of the devastating Sichuan earthquake, and was granted refugee status last April by the U.N. High Commission for Refugees (UNHCR). Chinese officials told his brother in October that Beijing would be seeking his extradition on suspicion of "incitement to subvert state power" after he published a number of satirical cartoons targeting President Xi Jinping. Jiang's wife Chu Ling said Jiang and Dong have both pleaded guilty to the immigration-related charges against them. "I don't think Jiang Yefei's mental health is very good right now, and he told me that he won't be released," Chu said. "I said he shouldn't have pleaded guilty, because he would be more likely to be repatriated." "I wasn't able to ask him[why] because there was very limited time," she said. "But I don't accept Jiang Yefei's guilty plea because I think that it was the result of threats or that it was forced out of him." "He can't read Thai, and we have previously agreed by phone that he won't plead guilty, no matter what happens," Chu said. "If you so much as nod at them, they take that to mean you admit your guilt, and they start working with the Chinese." She said members of the Falun Gong spiritual movement, which is banned as an "evil cult" in China, had previously allowed the Thai police to note that they accepted the charges against them, before sending them to China-influenced areas of northern Myanmar close to the Chinese border, where they were eventually repatriated. She said the UNHCR appears to have underestimated the danger of repatriation. "UNHCR is of the opinion that repatriation is not allowed here, but the Thai government just sends people back to Myanmar, where the Chinese police are waiting," Chu said. "The Thai police trick people into admitting their guilt and then deport them immediately, and there is a Chinese arrest warrant out for Jiang Yefei," she said. Chu said she has also been asked to stay away from underground groups helping Chinese nationals flee China, for fear that they will be charged with harboring fugitives. "[They] genuinely believe that China has huge power here," she said. "[It's because] Jiang Yefei recently drew some cartoons of Xi Jinping and the Politburo standing committee, which a dictatorial regime will never allow." "I think Jiang is in a lot of danger; people have told me of similar cases where they have injected people with some kind of drug that makes it look as if they died of a heart attack," she said. A petition for their release According to the Dublin-based Frontline Defenders rights group, which this week launched a petition calling on Thailand to release the two men, Jiang's Chinese passport has expired, and it is unclear whether Dong Guangping is in possession of a valid passport, The petition on the group's website calls on Bangkok to "immediately and unconditionally release Dong Guangping and Jiang Yefei." The group, which is also known as the International Foundation for the Protection of Human Rights Defenders, said the Thai authorities should guarantee human rights defenders the freedom to carry out "legitimate human rights activities without fear of reprisals and free of all restrictions." Thailand-based Chinese activist Lin Dajun said refugees fleeing political persecution in China face a precarious situation once they arrive. "They are more humane in Thailand, but they might arrest you and they might not," Lin said. "They keep one eye open and the other one closed." "A lot of people have managed to get refugee status and settlement in a third country, so you can't say Thailand doesn't give anyone a chance; they do," he said. "Jiang Yefei has already been detained twice by the Thai authorities, and he already has refugee status," Lin said. "They detained him alongside Dong Guangping because the immigration authorities discovered he was illegally resident." Thailand isn't a signatory to the United Nations covenant on refugees, and doesn't recognize the concept of political asylum, Lin said. Chinese refugees, once approved by UNHCR, have the option of resettlement in more than 50 countries, he added. UPDATE - 16 November 2015 Thai authorities in Bangkok have repatriated five Chinese nationals, including two veteran dissidents who had been granted refugee status by the United Nations, Thailand-based activists told RFA on Monday. A Bangkok-based democracy activist who gave only his surname Li said Dong Guangping, Jiang Yefei and three other Chinese nationals had been sent back to China on Friday. "I had planned to go and visit[Jiang and Dong] this morning, but when I got to the immigration detention center, the police officer couldn't find their names," Li said. "I went to two more departments after that, and they couldn't find them either, until a police officer told me that they had both been sent back to China last Friday," he said. "There was a group of five people in total." Li said it was unclear whether the five had been sent across the border, or whether Chinese personnel had arrived in Thailand to fetch them. "We are trying to find that out right now, as well as why the United Nations was unable to protect either of them," he said. "We want to know the reason." "All of their family and friends had been very worried that this would happen, and we call on the international community to follow their case," Li said. "This is very serious." 'We are all terrified' Dong fled China with his family in September after serving a three-year jail term for subversion from 2001-2004, and being "disappeared" and held for eight months in secret detention in 2014. His wife Chu Shuhua remains in Bangkok. Political cartoonist Jiang had been in Thailand since 2008 when he fled China, where he was detained and tortured after he criticized the ruling Chinese Communist Party's handling of the devastating Sichuan earthquake, and was granted refugee status last April by the U.N. High Commission for Refugees (UNHCR). His wife, Chu Ling, who remains in Bangkok, said the two men had been charged with illegally entering the country before they were deported. According to Li, Dong and Jiang had pleaded guilty to the charges, and were fined 5,000 (U.S. $139) and 6,000 baht (U.S. $167) respectively for the offense. However, their guilty plea paved the way for deportation procedures to begin, and the Chinese government had paid the fines on their behalf, he said. Thailand-based activist Yang Chong said the identities of the other three deportees remains unclear. "If they were deported to China, then they were definitely Chinese nationals, but we don't know who they are," Yang told RFA on Monday. He said the deportation had thrown Chinese refugees and activists in Thailand into a state of fear. "People keep texting me to ask what they should do; we are trying to think of something," Yang said. "Things are pretty dangerous right now; we are all terrified." Those who apply for political asylum at the UNHCR are issued with a "protection letter" while their application for resettlement is under way, a process which can take years.