Wicharn Phuviharn went to the government’s public service centre, located opposite Government House, to submit what he called “the document presenting responsibility over the plaque’s removal” to Prime Minister Prayut Chan-o-cha.

He read out the 27-page submission before presenting it at the centre.

Asked where he had placed the removed plaque, he said he had left it nearby but had no idea where was now.

Officers then took him to Dusit Police Station for psychological evaluation and further questioning.