U.S. President Donald Trump received a letter from North Korean leader Kim Jong Un on Wednesday to follow up on their recent talks about denuclearization of the Korean Peninsula, the White House said Thursday.

"The ongoing correspondence between the two leaders is aimed at following up on their meeting in Singapore and advancing the commitments made in the U.S.-DPRK joint statement," White House press secretary Sarah Sanders said in a statement.

DPRK is the acronym for the Democratic People's Republic of Korea, North Korea's formal name.