North and South Korea run a joint industrial park at Kaesong, North Korea (Creative Commons).

The two countries used the four remaining telephone lines to control daily cross-border traffic of workers and cargo, The New York Times reported. North Korea had not stopped cross-border economic exchanges as of Wednesday.

North and South Korea still have hot lines between their civil aviation authorities, The New York Times reported. 

From Reuters: 

The move is the latest in a series of bellicose threats from North Korea in response to new U.N. sanctions imposed after its third nuclear test in February and to "hostile" military drills under way joining the United States and South Korea.

The North has already stopped responding to calls on the hotline to the U.S. military that supervises the heavily armed Demilitarized Zone (DMZ) and the Red Cross line that has been used by the governments of both sides.

“There do not exist any dialogue channel and communications means between the [the North Korean Democratic People’s Republic of Korea] and the U.S. and between the North and the South,” said a North Korean statement sent to the South Korean military by telephone. “Not words but only arms will work on the U.S. and the South Korean puppet forces.”

Read more of Neon Tommy’s coverage on North Korea here.

Reach Executive Producer Agnus Dei Farrant here.