Story highlights South Korea said this month it would shut down the joint industrial park

Pyongyang said it drove tensions to the "furthest extreme of confrontation and war"

(CNN) South Korea accused North Korea of funding weapons programs with wages intended for workers at an industrial complex.

In a statement Sunday, South Korea's Unification ministry said North Korea was spending 70% of wages destined for workers at Kaesong Industrial Complex .

"North Korea's party, government and military is earning foreign currency [cash, USD] ... [it is] being spent for nuclear and missile development, idolization and luxury goods," the statement said.

Rare cooperation

The Kaesong complex lies north of the Demilitarized Zone, which divides the two Koreas.