SEOUL, South Korea (AP) — In a symbolic display of anger, North Korea on Tuesday blew up the northern section of unused roads that once linked it with the South, with the rivals exchanging threats days after the North claimed that its rival flew drones over its capital Pyongyang.

North Korea blew up the northern parts of inter-Korean roads no longer in use on Tuesday, South Korea said, as tensions between the two keep rising.

The largely symbolic move by Kim Jong Un's regime threatens to bring a new wave of escalations to the tumultuous North-South border.