India's Competition Commission has made Anheuser-Busch InBev (AB InBev), the world's largest brewer, a target in an antitrust investigation after four years of cooperation as a witness. The investigation focuses on 42 alcohol retailers in Telangana, which are accused of forming a cartel to favor AB InBev's products, leading to a significant increase in its market share. In November 2025, AB InBev's status was changed to 'party under investigation' without prior notice, prompting a court battle. A judge in Karnataka state has temporarily halted the investigation, recognizing AB InBev's concerns about the lack of due process. If the CCI's ruling is upheld, AB InBev could face penalties amounting to three times its profit or 10% of its annual turnover for each year of alleged wrongdoing. The Indian beer market is valued at $10 billion, with Heineken controlling around half, while AB InBev and Carlsberg each hold about 19%. This case marks a significant regulatory move in India's alcohol sector, following previous fines against Heineken and Carlsberg for price collusion.