
Khunying Pojaman, wife of the former PM, flew to China with her adopted brother and secretary on Tuesday amid rumours they would seek "political asylum" abroad.
Pojaman, Bhanapot Damapong and Kanchanapa Honghern quietly left Thailand at 10.40am from Suvarnabhumi Airport in Bangkok to Beijing on Tuesday.
They were seen to carry several bags with them. Some of her three children broke down in tears as they saw her off.
Reports have been rife that they would flee abroad after the Criminal Court sentenced the Pojaman, her brother and secretary to three years jail after finding them guilty of seeking to avoid paying tax of Bt546 million on a share deal in the late 1990s.
The Supreme Court's Criminal Division for Political Office-Holders has summonsed both Thaksin and Pojaman, who are defendants in a trial over the purchase of a prized block of land on Ratchadaphisek, to give final testimony Monday.
So there is renewed interest over whether the pair, particularly Pojaman, will return for the case. The court is due to give its verdict on the Ratchada case on Sept 16.
Thaksin has been expected to return from China on Sunday. He flew to Japan on August 1 to give a special lecture, and was reportedly due to attend the opening of the Olympic Games in Beijing, today.