By The Nation
EPPO director Thawarat Sutabutr said the Commerce Ministry would also be asked to discourage the practice.
Thawarat said retailers would be invited to a meeting to discuss the practice, commonly used to gain advantage over competitors.
He said at least two retailers had announced the same price reduction at the same time, possibly in violation of the Trade Competition Act and government policy on fair business practices.
Retailers often announce price cuts a day in advance via the mainstream and social media, leading to a surge in demand and queues of vehicles at their petrol stations.