India, Aug. 27 -- Chinese President Xi Jinping on Wednesday ordered all-out efforts to search for and rescue people missing after devastating flash floods swept through villages and towns near the China-Nepal border area in Tibet, causing heavy casualties.

A total of 145 officers and soldiers from the Xigaze detachment of the People's Armed Police have been sent to the affected border port to assist with emergency response operations.

A sudden, massive flood swept through two central Nepal districts bordering Tibet, killing at least four people, causing extensive devastation at settlements along the river and damaging at least a dozen hydropower projects early Wednesday.

At least 105 Indians and 37 NRIs are among the nearly 400 persons...