The daughter of Pheu Thai core member Watana Muangsook, who is being held in military detention, on Wednesday submitted a copy of her father's petition alleging human rights violations to the United States embassy in Bangkok.
Ms Weerada asked the US to examine her father's case to see whether the National Council for Peace and Order's (NCPO) actions against people holding opposing opinions are in breach of the principle of human rights.
The petition, which was initially addressed to international human rights organisations, was signed by Mr Watana before he reported to the military on April 18 after being summoned by the National Council for Peace and Order (NCPO) for his persistent attacks on the draft constitution.
There was a clear presence of police, both in uniform and plainclothes, deployed outside the embassy when Ms Weerada arrived to submit the petition. She was not harrassed.
Ms Weerada said her father had been allowed to call her on the phone since his detention, and said that some people would come to take her to see him.
After reporting to the NCPO at the 11th Army Circle on Monday, Mr Watana was taken to Surasee Military Camp of the 9th Infantry Division in Kanchanaburi, where he is still being held.
On Wednesday morning, Mr Watana's lawyer Narinpong Jinapak went to the Bangkok South Criminal Court. Mr Watana was due to report to the court this morning on a charge of violating the Computer Act of 2007 by posting messages on the social media attacking the NCPO.
Mr Watana had been freed on bail and was required to report back to the court today.
Mr Narinpong told the court his client was still being detained and unable to appear.
The lawyer learned the court had already been notified of this by the military on Tuesday afternoon. The officer told the court the military would bring the Pheu Thai politician to the court on Monday, April 25.
Mr Narinpong said it was highly likely Mr Watana would be detained for the full seven days before being taken back to the court to report on Monday.