India, Aug. 27 -- At least 77 pilgrims associated with Sadhguru's Isha Foundation are missing after devastating flash floods struck the Nepal-Tibet border region, the spiritual leader said in an online post.

The group was at an immigration office in Gyirong, Tibet, while returning from the Kailash Mansarovar pilgrimage when the floods struck, according to Sadhguru.

'Terrible and tragic flash flood'

Sharing a video showing the scale of the disaster, Sadhguru said one of his Kailash groups was caught in the flooding while at the immigration office.

"A terrible and tragic flash flood has taken place at Gyirong in Tibet - China, and one of our Kailash groups was caught in it," he said.

He said the immigration building and much of the sur...