The Thai Ministry of Commerce has initiated an official investigation into allegations that drinks group Thai Beverage has been selling its standard beer brands below the regulatory floor price, according to a report in the Thai newspaper Krungthep Turakij.

The report cited the director general of the Ministry of Commerce's Internal Trade Department as the source for the story.

According to the report, complaints have been lodged with the ministry alleging that prices of Thai Beverage's Archa Beer were below minimum prices set by the Thai Ministry of Finance's Excise Department. The report also stated that an unnamed source within Thai Beverage had refuted the report.