14 September 2013Last updated at 17:20 ET
Continue reading the main story
The US state of Colorado is continuing a large-scale rescue operation after severe flooding left four dead and hundreds unaccounted for.
Thousands of people have been forced to evacuate from affected communities.
The National Guard has been deployed to one town to supply food and water while inhabitants await rescue.
Although flood waters are now subsiding, more rain has been forecast and authorities have warned of more possible flash flooding.
A spokesman for Boulder County said that 200 people were still unaccounted for, but said that some of them may simply be out of contact with family and friends, or awaiting rescue.
However, the sheriff of Boulder County, Joe Pelle, said officials are "assuming that there may be further loss of life or injuries".
"I hope and pray that's not the case but, given the devastation in some of those closed canyons, it's certainly a high probability," Mr Pelle said.
Mr Pelle said that emergency services had not been to respond to residents in some areas because the damage to the road network had been so bad.Emergency order
Rescuers are using helicopters to airlift those still stranded in the mountain village of Jamestown, the BBC's Alastair Leithead reports from Los Angeles.