2. Closure of Places that are Risk-Prone to the Transmission of the Disease:
the Governor of Bangkok and all Provincial Governors shall consider and issue Orders by virtue of Section 35 (1) of the Communicable Diseases Act B.E. 2558 (2015) to temporarily close places with high numbers of people conducting activities together and at risk of spreading COVID-19,
but at a minimum, shall order the closure of the following places:
(1)
boxing stadiums, sport stadiums, sport arenas, playgrounds, horse racetracks in all provinces throughout the Kingdom until notified otherwise;
http://www.mfa.go.th/main/contents/files/news3-20200329-164122-910029.pdf