North Korea has announced it will return two South Koreans who entered into the country illegally last month.

South Korea’s Unification Ministry said Pyongyang sent a notice Monday afternoon in the name of its Red Cross Society central committee.

According to the notice, a 59-year-old man, surnamed Lee, and a 51-year-old woman, identified with the last name Jin, will be sent back Wednesday morning via the truce village of Panmunjeom.

The two South Koreans are said to have illegally entered the North on May 11 through the China-North Korea border.

The Seoul government plans to look into why they entered the North after taking them into custody on Wednesday.

The government said it had tried to find out their whereabouts after they went missing in the Chinese area bordering North Korea during their trip to China.