A desperate search is underway for girls swept away at a summer camp during severe flooding in Texas, which is reported to have killed at least 24 people.

In less than an hour the Guadalupe River rose 26 feet (8 metres) with the flooding that followed in west-central Texas sweeping away mobile homes, vehicles and holiday cabins at locations where people were spending the July 4 weekend celebrating American Independence Day, reports the BBC.

It notes that the missing girls were with about 750 other children when their Christian summer camp was engulfed by the fast-moving waters.