A combination photo shows a Korean Central News Agency (KCNA) handout of North Korean leader Kim Jong Un released on May 10, 2016, and Republican U.S. presidential candidate Donald Trump posing for a photo after an interview with Reuters in his office in Trump Tower, in the Manhattan borough of New York City, U.S., May 17, 2016.

U.S. President Donald Trump said on Saturday a meeting with North Korea could happen over the next three to four weeks.

"I think we will have a meeting over the next three or four weeks," Trump said at a campaign rally in Washington, Michigan.

"It's going be a very important meeting, the denuclearization of the Korean Peninsula."