Parit, nicknamed Penguin, was detained at 4.20pm in Nonthaburi province and reportedly taken to Samranrat police station.
In the video clip of this arrest published through his Facebook page, Parit said: “I do not accept this procedure, as well as the powers behind this action.”
Parit gave a speech at a rally held at Thammasat University’s Rangsit Campus on Monday (August 10) in which students also released a 10-point manifesto for reform of the monarchy.
Police have charged him with sedition, obstructing traffic, and using an amplifier without permission.