Fire managers will allow more people back into their homes Sunday as it becomes safe, officials said.
Blaze south of Boulder grows to more that 122 acres with 0% contained.
So far there have been no reports of casualties or fatalities from the fire, and one person who was previously missing has been accounted for.
“This fire is frankly a force of nature,” Colorado Gov. Jared Polis said.
“It was our distinct honor to use Officer Eric Talley’s handcuffs to formally process" Ahmad Al Aliwi Alissa into jail, Boulder police said in a statement.
More than 500 people bundled in winter jackets attended a downtown Boulder candlelight vigil to mourn the 10 people gunned down at a supermarket.
The incident came just days after 10 people were killed in a mass shooting at a supermarket in Boulder, Colorado.
Ahmad Al Aliwi Alissa bought the weapon on March 16, just six days before the attack at a King Soopers store in Boulder.
Ten people between the ages of 20 and 65 were killed during a shooting at a King Soopers grocery store in Boulder, Colorado.
Ten people, including a police officer, were killed when a gunman opened fire at a King Soopers store in Colorado on Monday.