President Xi Jinping on Sunday sent his condolences to South Korea, saying he was shocked to learn of the stampede that caused heavy casualties.

"On behalf of the Chinese government and the people of China, I express our deep condolences for the victims," Xi said in a message to South Korean President Yoon Suk-yeol, according to state broadcaster CCTV.

The President added that several Chinese nationals had been killed or injured in the tragedy.

He called on South Korean officials to do their best to treat those injured, and take appropriate follow-up measures. (Additional reporting by AFP)