At least two dead after Grand Canyon flash flood

At least 80 people have been rescued over the weekend after a flash flood

kills two hikers in the US' Grand Canyon.

One person is still missing by Monday night, and the incident commander

says more equipment and search dogs are arriving

which can help with the probe.

"Technical search team.

They're there just today, and we'll be deployed tomorrow morning to start

searching in the area of the box for the one remainder that we know we have," said Dave Black, the incident commander.

"There are day hikers that come into canyon that we don't know about.

So, that's as far as permitting and cross-checking all the people

that we know of, we have one person unaccounted for at this time.

So Border patrol, SAR tech, nobody here helping us today.

We've got four teams with four dogs, human remains detecting dogs,

so that'll be a great asset for us to have."