A fire that broke out in North Korea on Monday has rapidly spread towards the South Korean side of the inter-Korean border.
According to South Korean authorities, the blaze started early morning near a North Korean guard post located north of the Demilitarised Zone (DMZ), Yonhap News Agency reported.
By afternoon, it was within the proximity of the Dora Observatory in Paju, north of Seoul. The observatory was closed, and no casualties or damage have been reported, the authorities said.
The cause of the fire was yet not known, and a probe has been launched to determine the cause, they added.
The Korean DMZ, the world's most heavily-armed border, runs the width of the Korean Peninsula. It is guarded by more than two million troops on both sides.