Prosecutors raided 10 corporate offices, including internet portal Naver, Monday, over allegations that Lee Jae-myung, chairman of the main opposition Democratic Party of Korea (DPK) who served as mayor of Seongnam from 2010 to 2018, received donations from companies via Seongnam FC, the city's football club. The Seongnam branch of the Suwon District Prosecutors' Office sent prosecutors and investigators to the offices to search and seize documents related to the case.