The Centre for Covid-19 Situation Administration (CCSA) has put the brakes on City Hall's plan to allow five types of businesses, including spas and beauty clinics, to reopen today.
The Facebook page of the Bangkok Metropolitan Administration (BMA) said the CCSA had delayed the reopening by another 14 days.
However, it did not give any further details regarding the matter.
The abrupt order has raised speculation about the reason for the delay but observers said the Covid-19 situation in the capital was still worrying, so this was possibly the rationale behind the CCSA's caution.
The Bangkok Post yesterday attempted to contact CCSA spokesman Taweesilp Visanuyothin but he was not immediately available.
Earlier yesterday, the BMA's communicable diseases committee decided to allow several public places to reopen today following a drop in new cases, as long as they followed the government's strict Covid-19 guidelines.
Museums, beauty clinics, tattoo shops, nail salons and massage parlours were all due to reopen, albeit with strict limits on the number of visitors allowed.
However, saunas were not part of the easing proposal.
Public parks and gardens were also scheduled to reopen, with strict measures in place to prevent large crowds from gathering.
The BMA had stressed, however, that should any infections be found at the above venues, they would have to immediately close for a further 14 days.
They would also need to be thoroughly disinfected before being allowed to reopen.
However, other premises, such as night entertainment venues, karaoke bars and fitness centres, would have to remain shut until June 14, the BMA said.
Bangkok reported 1,356 new cases yesterday, most of which were centred around a residential camp for construction workers in Bang Na district and a local community in Sathon district.
Prior to the announcement, representatives of craft beer makers and massage parlour owners went to City Hall to submit a letter calling on the Bangkok governor to allow their businesses to reopen.
Their letter said the ban on serving alcohol and the order to shut dining establishments at 11pm have affected a lot of small businesses, including brewers, dealers and exporters, none of which have received any compensation for their hardship.