SEOUL, Aug. 2 (Xinhua) -- South Korean prosecutors on Thursday raided the foreign ministry headquarters in central Seoul over alleged trial dealings with former top court chief, according to local media reports.

Prosecutors and investigators secured documents on the dispatch of judges to foreign missions and the litigations on South Korean victims of forced labor and sex slavery by the Imperial Japan during the 1910-45 colonization of the Korean Peninsula.

The Supreme Court under former Chief Justice Yang Sung-tae was suspected of delaying the litigations without any clear reasons in a bid to increase the number of judges who can be dispatched to foreign missions of South Korea.

Prosecutors had found documents of the top court's administrative body, in which the foreign ministry demanded the delay of the litigations in return for the increased judges who can be sent to foreign missions.

The former top court chief was surrounded by a series of allegations that he had ordered judges to rule in favor of the government's positions to get approval for the establishment of another court of appeals, which can strengthen the judiciary power.