The authorities reported hundreds of people missing and at least 160 people killed in the border region of Nepal and Tibet, where an avalanche of mud, water, ice and rocks smashed down.

© Reuters

An initial assessment of satellite imagery suggests an “ice avalanche” from a high-altitude glacier sent a giant cascade into the valley below.

© Prakash Mathema/Agence France-Presse — Getty Images

Joshua Aviles, a Navy sailor, said his father had been freed days after he was detained as Mr. Aviles returned from a lengthy deployment in the Middle East.

© Katherine Delgado, via Associated Press

A wall of water swept down a Himalayan river valley shared between Nepal and the Chinese territory of Tibet.