North Korea says it has arrested two South Korean men who it accused of spying for Seoul.
In
a statement late on Thursday, state media said the two men, based in
the Chinese border city of Dandong, were working to smear North Korea.
Seoul called the claims "groundless" and demanded the men be released.
North
Korea periodically arrests foreigners and, in the cases of South Korean
and US nationals, is accused of using them as bargaining chips.
It also arrests those engaged in missionary work, because religious activity is severely restricted in North Korea.
Sometimes it swiftly deports those held, as in the case of Australian missionary John Short, who was briefly detained in 2014.