According to a Facebook post titled "Moot Khana Ratsadon" (Khana Ratsadon's plaque), the plaque could have been removed during the renovation of the King Rama V statue early this month. The memorial plaque was once removed during the tenure of former prime minister and military strongman Field Marshal Sarit Thanarat. The plaque had become a gathering point for political activists who came to observe the anniversary of the 1932 revolution annually. Banlue Suksai, the director of the Dusit district office, said the district did not remove the memorial plaque. Maj Puttinart also said the Khana Ratsadon was different from other coup makers in that they were "promoters of democracy".
Source: Bangkok Post April 15, 2017 23:37 UTC