SEOUL, July 31 (UPI) -- South Korea's special prosecutor has significantly expanded its investigation into the Unification Church. The probe now zeroes in on its senior leadership for alleged financial crimes and political meddling.

On Saturday, Jung Wonju, long-time vice president of the Cheon Mu Won, the central administration arm of the church, and executive secretary to Chairwoman Hak Ja Han, returned to Korea under what local media suggest was legal pressure.

Meanwhile, Yoon Young-ho, once a high-ranking executive in the church, was formally arrested and detained on allegations of offering bribes and luxury gifts to Rep. Kweon Seong-dong, a close ally of former president Yoon Suk-yeol.

Yoon is suspected of seeking political favors in return -- a charge now at the center of the special prosecutor's inquiry.

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