Just days after Qualcomm was fined almost $1 billion by China’s antitrust regulator and agreed to modify its licensing practices, South Korea’s Fair Trade Commission reportedly has launched an investigation of the US chipmaker.

The commission will investigate whether Qualcomm has abused its dominant position in South Korea, the Maeil Business Newspaper reported today. Qualcomm was fined more than $200 million by the commission in 2009 for its anti-competitive behaviour.

As part of its investigation, the regulator will make inquiries with the country’s major handset makers as well as rivals such as Intel, the newspaper said.

Back in October reports emerged that China’s two antitrust regulators met in May and June with their Korean counterparts to discuss the country’s experience in handling similar cases.

Qualcomm made about $7.57 billion last fiscal year in royalties from licensing its patents and other IP.

China accounts for almost half of Qualcomm’s total revenue, which was $25 billion in its last fiscal year.