Hyundai Asan has delivered to North Korea materials on real estate owned by South Koreans at the North’s Mount Geumgang as Pyongyang is set to launch an investigation into the properties on Thursday.

Seoul’s Unification Ministry deputy spokesman Lee Jong-ju told reporters Wednesday that Hyundai Asan on Tuesday sent real estate listings and other detailed materials on South Korean real estate at the mountain resort to the North’s office that handles tour programs.

Lee added that an inter-Korean family reunion center was included in the listings that were sent.