A South Korean court on Friday ordered Japan's Mitsubishi Heavy Industries Ltd. to pay four Korean victims of wartime forced labor a total of 470 million won (about $411,000) in compensation.

The Gwangju District Court ordered the firm to pay 150 million won to Oh Cheol Seok, a younger brother of late victim Oh Kil Ae; 120 million won to 87-year-old victim Kim Jae Rim; and 100 million won each to victims Yang Young Soo, 86, and Shim Sun Ae, 87, according to Yonhap News Agency.

"Mitsubishi Heavy Industries' forcible mobilization of the plaintiffs into producing war materials constitutes inhumane illegal activities that are an active involvement in the unlawful colonial occupation and war of aggression," the court said, according to Yonhap.

Friday's ruling followed a similar ruling that the Gwangju District Court delivered in favor of forced labor victims in damages suits against Mitsubishi Heavy earlier this week.

On Tuesday, the same court directed the firm to pay 85-year-old Kim Yong Ok and a family member of the late Choi Jong Rye a total of around 123.20 million won.

A string of district court rulings have found in favor of those forced to work for Japanese firms following a landmark May 2012 decision by the Supreme Court.

Reversing previous court decisions, the top court ruled that the right of former forced workers and their families to seek withheld wages and compensation was not invalidated by a 1965 Japan-South Korea agreement that Tokyo claims settled all postwar compensation claims, prompting plaintiffs to seek damages in South Korea.

Japan maintains that all individual compensation claims were settled with that treaty, under which South Korea and Japan normalized their relations. Mitsubishi Heavy has argued in the past in court in South Korea that the plaintiffs' claim should be rejected on this basis.