Lawyers for South Korean plaintiffs who won a wartime labor compensation case against Mitsubishi Heavy Industries Ltd. said Tuesday that they will soon ask a court to authorize the sale of the Japanese manufacturer's assets seized in South Korea.

The lawyers had set Monday as the deadline for Mitsubishi Heavy to agree to compensation talks, but the deadline passed with "no response or action from the company," they said in a statement.

"Being over 90 years of age, the plaintiffs cannot delay legally stipulated procedures any longer," the lawyers said.