Police on Sunday questioned a former chief secretary to Unification Church leader Han Hak-ja as part of a widening investigation into allegations that the church provided illicit money to politicians across party lines. Jeong Won-ju, who formerly oversaw the church's finances and was reportedly the No. 2 figure in the church's leadership, appeared at the national police agency headquarters in Seoul earlier in the day to face questioning as a suspect, police officials said. The Unification Church is currently at the center of corruption allegations involving Kim Keon Hee, the wife of ousted former President Yoon Suk Yeol, that the church provided luxury gifts to her in return for favors. Police are currently broadening the investigation into allegations that the church also made illicit payments to several politicians across party lines, including Chun Jae-soo, who resigned as oceans minister earlier this month. It marks the second time Jeong has been questioned in connection with the investigation. Known as one of Han's closest aides, she was previously questioned on Dec. 18 and has sinc