North Korean leader Kim Jong Un has received an "excellent" letter from U.S. President Donald Trump, the state-run Korean Central News Agency reported Sunday, just days before Trump travels to Asia for the Group of 20 summit in Osaka.

Kim "said with satisfaction that the letter is of excellent content," KCNA said in a brief dispatch without revealing any details, including when or how the "personal letter" was delivered.

"Appreciating the political judging faculty and extraordinary courage of President Trump, Kim Jong Un said that he would seriously contemplate the interesting content," the report said.