In pictures: Deadly flooding in Texas

Torrential rain has caused flash flooding in parts of central Texas, killing at least 50 people.

Search and rescue teams are still working to find more than 20 girls missing from Camp Mystic, a private Christian summer camp located along the Guadalupe River, where water rose more than 20 feet in less than two hours. The families of four campers have confirmed their deaths to CNN.

Hundreds of people have been rescued or evacuated so far, many by helicopter, authorities said. The Trump administration will honor a federal disaster declaration signed by Texas Gov. Greg Abbott to help direct relief to the state, according to Homeland Security Secretary Kristi Noem.