The Council for Humanitarian Networking of the Sheikhul Islam Office has urged the government not to deport the remaining Uighur migrants in Thailand to China.
The Chinese government had already shown where its stands by linking the Uighur migrants with terrorism without backing this claim up with sufficient evidence, the council said Tuesday.
The Chinese have also expressed an inclination punish the Muslim migrants by bringing serious charges against them, the council said.
The Thai government should work with international human rights organisations to monitor legal proceedings which the Chinese government is pursuing against the Uighurs deported to China and ensure they comply with international human rights standards and laws if they have to stand trial, the council said.
A total of 109 Uighur migrants were deported to China last Thursday after 172 others were sent to Turkey for resettlement.
Eight more Uighurs were deported to Turkey last Saturday, bringing the total number sent to Turkey to 180. Some 52 others remain in Thailand.
The council also urged the government to base its decision on the remaining migrants not just on security principles but on moral and ethical ones too.
More importantly, the government should explain why it deported the other Uighurs to China, the council said.
Thailand needs to maintain good ties with the Muslim world, including communities in Thailand that are dismayed by the decision, the council said.
They were especially upset that the expulsions of the Uighur minority happened during the Ramadan holy month, when Muslims across the world express their compassion for others.
Former Asean secretary-general Surin Pitsuwan echoed the council's call for more clarity.
However, he agreed with the government's decision to have the National Security Council monitor how China treats the Uighur deportees who have arrived in that country.
The government should report the results of this work to the international community to improve global understanding about its handling of the affair, Mr Surin said.
The world pays great attention to human rights protection which underscores the need for Thailand to answer questions left unanswered on the Uighur deportation matter, he said.