South Korean prosecutors are seeking to question President Park Geun-hye this week over a political scandal that has engulfed her presidency, the Yonhap news agency reported Sunday.

Prosecutors are investigating whether Park exerted improper pressure on "chaebol" conglomerate bosses to raise funds for two foundations at the center of an influence-peddling scandal involving a longtime friend of hers.

Prosecutors have already questioned the chairmen of Hyundai Motor and Korean Air Lines and plan to question the de factor head of Samsung Group and other conglomerate chiefs over the political scandal, media reports said Sunday.