Unification Minister Chung Dong-young speaks with the European Union delegation in central Seoul on May 28. [MINISTRY OF UNIFICATION]

Unification Minister Chung Dong-young will face a prosecution investigation over allegations that he leaked classified information related to North Korea's nuclear facilities.

The Seoul Southern District Prosecutors' Office said Thursday that it received the case from the Seoul Central District Prosecutors' Office on May 21 and assigned the case to its investigation unit. Minister Chung is accused of violating laws governing the disclosure of official secrets.

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During a parliamentary committee session on March 6, Chung said North Korea is operating another uranium enrichment facility in the northwestern region of Kusong, along with previously reported ones in Yongbyon and Kangson.