People visit the statues of their late leaders Kim Il-sung and Kim Jong-il on the occasion of the Day of the Sun, the birth anniversary of Kim Il Sung, in Pyongyang, North Korea Thursday, April 15, 2021. AP-Yonhap

North Korean leader Kim Jong-un paid his respects at the mausoleum for his grandfather Kim Il-sung on Thursday to mark the birthday of the founder of the state, official media KCNA reported.

Kim and his wife, Ri Sol-ju, also watched a performance of song and dance at the Kumsusan Palace of Sun, where his father and grandfather lie in state, in celebration of the national holiday, KCNA reported on Friday.

"When the performance was over, the audience again broke into stormy cheers for the General Secretary," it reported.

Evening gala of youth and students takes place with fireworks to celebrate the Day of the Sun, at Kim Il Sung Square in Pyongyang, North Korea, on Thursday, April 15, 2021. AP

Kim's no-show at last year's anniversary fanned speculation about his health. A flurry of unconfirmed reports about his condition and his whereabouts followed, including reports suggesting that Kim was in grave danger after a surgery.

Kim was accompanied to the palace this year by senior North Korean officials, including his sister Kim Yo-jong, KCNA reported.

Earlier this month, North Korea said it would not take part in the Tokyo Olympics due to coronavirus concerns, dashing South Korean hopes that the Games could be a catalyst to revive peace talks.

North Korea says it has not had any coronavirus cases. (Reuters)