At Camp Mystic, a Christian summer camp in Hunt, Texas, where officials are grieving the loss of 27 children and counselors, belongings of the young campers were strewn about the flooded floors of a dormitory, while other items, including a pink backpack and a Camp Mystic T-shirt, were found along the bloated Guadalupe River, photos show.

Emergency officials are starting to focus on alert systems as they search for answers about how the flash flooding swept away so many.

The president confirmed the visit to reporters Monday evening, calling the flooding in Central Texas a "terrible event." Mr. Trump said Sunday that he is planning on going to Central Texas. He said he would have gone Sunday but he would be "in their way,

Authorities on Sunday were in a desperate search to find those still missing after historic flash floods swept across central Texas — including 10 children from a beloved all-girls camp — as the death toll rose and forecasters warned of more rain.