At least 292 people have been killed and more than 1,000 are missing after a massive Himalayan mudslide and flash flood struck the Gyirong Port area along the China-Nepal border on Wednesday.As of Thursday afternoon, three people were confirmed dead and 558 missing on the Chinese side, with 289 dead and more than 644 missing in Nepal.“Nearly 100” Chinese nationals were missing on the Nepalese side, foreign ministry spokesman Lin Jian said in Beijing on Thursday. The Chinese embassy in Nepal was working with local authorities to further verify the information, he added.Those missing on the Chinese side include 260 foreign nationals, according to an official update on Thursday morning from Shigatse, the city in China’s Tibet autonomous region that administers the Gyirong border checkpoint.Chinese Premier Li Qiang arrived at the checkpoint on Thursday afternoon to direct disaster relief efforts and visit emergency responders.01:10Rescuers pull mud-covered survivors stranded by Nepal flash floodsThe Nepal Tourism Board said 644 tourists were missing as of Thursday afternoon, including 517 foreign nationals from at least 26 countries.