Police said Friday they have requested an arrest warrant for a man suspected of sending letters to local media, threatening to explode the plane the widow of former South Korean President Kim Dae-jung planned to take on her visit to North Korea.
  

The Seoul Metropolitan Police Agency said they arrested a 33-year-old Park on Thursday who wrote a one-page letter threatening to blow up the plane on either the departure or the return of Lee Hee-ho's trip to the North.
  

In the letter pretending to be from a local anti-North Korean organization, Park said Lee's visit is "a scheme aimed at again extending the life of the North Korean regime."
  

Police said the organization is not real and was made up by Kim.
  

According to police, Park admitted his crime, saying he wanted to stop Lee from visiting the North.
  

Lee returned home on Aug. 8, after a four-day trip to promote reconciliation on the divided Korean Peninsula.
  

Her trip was in the spotlight on hopes it could ease tension on the Korean Peninsula, sparked by the North's nuclear and missile tests, as Lee is also a symbolic figure for inter-Korean reconciliation due to her late husband's accomplishments.
  

Kim Dae-jung, who died in 2009, was the architect of the "sunshine" policy that actively pushed for cross-border exchanges and reconciliation. He held the first inter-Korean summit with then North Korean leader Kim Jong-il in 2000. At that time, Lee accompanied her husband to Pyongyang. (Yonhap)