Strong winds swept a wildfire in North Korea across the heavily armed border with South Korea on Monday, prompting a suspension of cross-border movements into a jointly-run factory park in the North.

About 50 firefighters and three helicopters were battling the fire on the south side of the Demilitarised Zone border, according to an official at the South Korean border town of Paju, adding that there were no reports of casualties. Access to the area is usually restricted.