North Korea’s Supreme People’s Assembly has voted to scrap all agreements signed with South Korea on promoting economic cooperation, the North’s official KCNA news agency reported on Thursday, as the two Koreas’ relations continue to deteriorate sharply.

The assembly, which takes formal steps to adopt policy dictated by the ruling Workers’ Party, also voted to abolish laws governing economic ties with Seoul, including the special law on the operation of the Mount Kumgang tourism project.

The tours to the scenic mountain just north of the eastern border were a symbol of an economic cooperation that began during a period of engagement between the two Koreas in early 2000s, drawing nearly 2 million South Korean visitors.

The project was suspended in 2008 after a South Korean tourist who strayed into a restricted zone was shot and killed by North Korean guards.