At least 111 people have been killed and a further 173 are still missing after catastrophic flash flooding swept through Central Texas. Officials fear that the death toll could soar as search and rescue efforts entered their sixth day Wednesday, as hundreds of local, state and federal emergency responders sifted through debris for survivors.

Ten campers and their 19-year-old counselor are among those still missing from Camp Mystic, where 27 died in one of the deadliest U.S. floods in decades. More storms are forecast overnight.