The North Korean leader's powerful sister said on Thursday that the country has never taken down propaganda loudspeakers and will not do so, calling South Korea's belief that Pyongyang was responding to its peace overtures a "pipedream.

A South Korean court on Tuesday ordered the arrest of the wife of jailed former President Yoon Suk Yeol as investigators seek to charge her over various suspected crimes, including bribery, stock manipulation and meddling in the selection of a candidate.

South Korea's former first lady Kim Keon Hee has been arrested after a court late on Tuesday issued a warrant to arrest her following accusations of graft that she denies, the Yonhap news agency reported.