At least one person is dead, and over a dozen are missing or unaccounted for after a flash flood struck Grand Canyon National Park in Arizona on Saturday, NBC News reported Monday.
Early on Sunday, the park service said 15 people were missing or unaccounted for, down from a previous estimate of 20, the report said.
The US National Park Service (NPS) put out a statement on Sunday, asking the public to provide any information about the unaccounted for individuals following "a significant flash flood event in Bright Angel Canyon and the Phantom Ranch area."
"Grand Canyon National Park staff, in coordination with the Arizona Department of Public Safety, are continuing evacuation and response efforts and working to account for individuals who may have been in the affected area," the statement read.
On Sunday, 62 people have been evacuated from the affected areas of the National Park, with additional evacuations scheduled throughout the day. No injuries have been reported.
Debris due to flash flood has closed Colorado River
"The flash flood resulted in significant impacts to infrastructure throughout Bright Angel Canyon. Nearly all footbridges spanning Bright Angel Creek were destroyed, eliminating hiker access across the creek."
NPS added that debris and metal structures entered the Colorado River following the flash flood, leading to the river being "closed to river traffic until further notice."
"Additional thunderstorms and heavy rainfall are possible Sunday and Monday, which could result in additional flash flooding, debris flows, rockfall, and changing trail and river conditions."