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 friend of hers, Yonhap reported on Sunday, citing prosecution sources. They are also probing Park’s friend, Choi Soon-sil, who is alleged to have used her ties to the president to meddle in state affairs and wield influence in the cultural and sports communities, a prosecutor has previously said.