Authorities described the search as grueling and slow-moving, with unstable rubble piles and high water complicating recovery ...

At least 161 people were missing from Kerr County alone, officials said. Several children were among the missing.

The uncertainty about what happened at Mystic comes as local officials have repeatedly dodged questions about who was monitoring the weather and what measures were taken ahead of the flooding.

Some members of the Los Angeles County Fire Department are stepping up to join the urgent search and recovery efforts following catastrophic flooding in Texas.