Government spokesman Lt Gen Sansern Kaewkamnerd flatly denied the report saying it was untrue.
Instead, he said that the committee in charge of organising the royal cremation ceremony has met last Wednesday (March 1) and agreed to hold the ceremony during the final week of October.
The agreement of the committee has been forwarded to His Majesty King Maha Vajiralongkorn for royal consideration, he said.
The spokesman then called on the people not to share the false information which could bring about confusion and misunderstanding among the public.
The spokesman also said the weekly physical exercise on Wednesdays for government officials to perform was called off due to the summer heat.