The Supreme Court has rejected former premier Yingluck Shinawatra's request to take her son on a study trip to Japan, a source at the court said.
The source said Ms Yingluck's lawyers sent the request to the court seeking permission to accompany her son on the trip to Japan between Dec 15-25.
The Supreme Court's Criminal Division for Political Office-Holders decided her request lacked sufficient grounds and rejected it, the source said.
It is the second time the court has vetoed a request by her to travel abroad.
On Dec 2, the Supreme Court also rejected her request seeking permission to attend a meeting in Europe with two members of the European Parliament who invited her to share her views on the Thai political situation. The court based its rejection on similar grounds.
The court earlier released Ms Yingluck on 30-million-baht bail in the rice-pledging case.
It granted bail to Ms Yingluck in May and ordered her not to leave the country without its permission.
It gave the order when she was answering charges relating to her alleged dereliction of duty as prime minister in overseeing the loss-ridden rice-pledging scheme.