North Korea destroyed parts of roads and rail lines connecting it with South Korea.
It comes after North Korea last week accused South Korea of flying drones over its capital.
In response, South Korea fired warning shots within its own border, according to South Korea's Joint Chiefs of Staff.
The detonations come after North Korea last week accused South Korea of flying drones over its capital Pyongyang.
Howell added that historically, North Korea has stepped up provocations during US election years.
Persons:
—, Jim Hoare, Kim Jong, Kim Yo Jong, Edward Howell, Howell, ", Hoare, Peter Ward
Organizations:
North, Service, South Korea's, Chiefs, Staff, Inter, Korean, Office, Bloomberg, Korea, Chatham House, Bloomberg Economics, Sejong Institute, Financial Times
Locations:
Korea, South Korea, North Korea, South, British, Kaesong, Korean, Pyongyang, North, Seoul