US President Donald Trump said he has “a very good idea” of North Korean leader’s Kim Jong Un’s medical condition.

“I can’t tell you exactly. Yes, I do have a very good idea, but I can’t talk about it now. I just wish him well, I’ve had a very good relationship with Kim Jong Un,” Trump said.

Kim has not been seen publicly since April 11, and he did not appear at an April 15 birthday celebration for his late grandfather Kim Il Sung, the biggest event of the year in the country.