South Korea's National Security Adviser Suh Hoon said that President Moon Jae-in and North Korean leader Kim Jong-un recently exchanged personal letters.

This comes as Suh revealed contents of a notice from Pyongyang on Friday, in which Kim apologized for the shooting death of a South Korean government worker by North Korean troops earlier this week.

In the letters between the two leaders, they expressed hopes to improve cross-border relations after overcoming hardships stemming from the COVID-19 pandemic.

Suh added that the letters were exchanged within the past month.