The South’s defence ministry said earlier it was considering a request by a Seoul church group to put up Christmas lights on a steel tower atop a military-controlled hill near the border.
The North’s official website– Uriminzokkiri– called the plan “a mean attempt for psychological warfare” against the communist state and threatened to retaliate immediately when the lights are switched on.
The 155-metre (511 feet) hill in the South, about three kilometres (two miles) from the border, is within range of North Korean gunfire.
“The enemy warmongers… should be aware that they should be held responsible entirely for any unexpected consequences that may be caused by their scheme,” it said.
“This issue… is not something to be ignored quietly,” it said.