Japanese authorities raid four large beer manufacturers over suspicions they colluded to raise beverage prices, a potential violation of Japan’s anti-monopoly laws. The Japan Fair Trade Commission (JFTC) conducts on-site inspections at the firms, which include Asahi Breweries, Kirin Brewery, Sapporo Breweries, and Suntory. Sources close to the investigation say the focus is on alleged wholesale beer price coordination.

The companies under scrutiny reportedly account for a large share of Japan’s beer market, with one report placing combined coverage at around 90%. Outlets also note that the suspected conduct could affect consumers across a beer market valued at more than ¥1 trillion annually. Following the raids, several news reports say shares of Japanese beer makers fall, reflecting market reaction to the antitrust investigation. While the reports agree on the firms and the alleged cartel behavior, they differ mainly in emphasis—some focus on the enforcement action and legal basis, while others highlight the scale of the market impact and the stock-price response.