The report claimed he was moved under Order 83/5 of the NCPO, and a purported copy of the order was posted on the net on Wednesday night.
Col Sirichan Ngathong said it was not true and the document was a forgery.
The document posted on the social media was not a genuine or official order of the NCPO, she said. All such orders must be announced through the Television Pool of Thailand.
The NCPO's legal affairs staff confirmed that the document purporting to be an NCPO order transferring Pol Gen Pongsapat was a fake.
The NCPO uses Thai numerals in its orders, not Arabic numerals as seen on the false one, she said.