REDDING, Calif. — Thousands more people fled their homes after wildfires surged near a small lake town in Northern California, and the advance of the state’s largest, deadliest blaze slowed slightly after days of explosive growth, authorities said.

In all, more than 10,000 people were under mandatory evacuation orders from the two blazes in Mendocino and Lake counties. Those fires were among 17 burning across the state, where fire crews were stretched to the limit.

A man whose wife and two great-grandchildren were among the six people who perished in the so-called Carr Fire, near Redding, California, said he did not receive any warning to evacuate.

Ed Bledsoe told CBS News he did not know his home was in danger when he left his wife, Melody, and the 4- and 5-year-old children to run an errand on Thursday.

Bledsoe said he received a phone call from his wife 15 minutes later saying he needed to get home because the fire was approaching. He said one of the children told him the blaze was at the back door. When he tried to return, the road was blocked with cars, and flames prevented him from returning on foot.

Shasta County Sheriff Tom Bosenko told the network there’s an investigation into whether the Bledsoe home received a warning call or a knock on the home’s door. The sheriff says there is evidence that door-to-door notifications were made in the area.

The latest evacuations included about 1,000 people in Mendocino County, Undersherriff Matthew Kendall said Monday.

The rest are in Lake County, where residents of the town of Lakeport, population 5,000, were ordered to leave Sunday night. Two other towns with about 5,000 people are also under mandatory evacuation.

The two blazes have destroyed six homes and are threatening 10,000 others. The fires had blackened 87 square miles (225 square kilometers), with minimal containment.

The wildfires that started Friday are about 100 miles (160 kilometers) southwest of Redding.

Crews handling the blaze near Redding struck a hopeful tone for the first time in days as the massive fire slowed after days of rapid expansion.

“We’re feeling a lot more optimistic today as we’re starting to gain some ground rather than being in a defensive mode on this fire all the time,” said Bret Gouvea, the California Department of Forestry and Fire Protection’s incident commander on the blaze around Redding, a city about 230 miles (370 kilometers) north of San Francisco.

As of Monday, the Redding fire had destroyed 723 homes, up from a previous count of 657 homes.

Shasta County Sheriff Tom Bosenko said authorities found a sixth victim of the blaze at a home that was consumed by flames, though he declined to say where. The victim’s identity was not released.

Authorities were also investigating at least 18 missing-persons reports, though many of them may simply be people who have not checked in with friends or family, police said.

The Carr Fire that threatened Redding — a city of about 92,000 people — was ignited by a vehicle problem a week ago about 10 miles (16 kilometers) west of the city. On Thursday, it swept through the historic Gold Rush town of Shasta and nearby Keswick, fueled by gusty winds and dry vegetation. It then jumped the Sacramento River and took out subdivisions on the western edge of Redding.

Redding Police Chief Roger Moore kept up a round-the-clock work schedule despite learning that his home was one of those destroyed. He was finally able to shave on Saturday when his wife brought him a razor, he said.

Moore was helping evacuate people from his River Ridge neighborhood in western Redding when the flames became unbearable.

“I saw everything around it ignite, and I go, ‘It’s gone,'” Moore said.

At least one person was arrested on suspicion of stealing from evacuated homes and authorities were keeping watch for other potential looters, said Deputy Travis Ridenour, whose home also burned.

“Lost our house like so many others,” Ridenour wrote on Facebook. “Still out watching over the ones still standing. No looting on my watch.”

After days of fortifying the areas around Redding, fire crews were increasingly confident that the city would escape further damage. The fire had not grown inside the city limits since Saturday, Gouvea said.

Some of the 38,000 people forced to evacuate said they were frustrated because they didn’t know whether their homes were standing or were destroyed. Authorities had not reopened any evacuated neighborhoods where fires raged due to safety and ongoing investigations and urged people to be patient.

Fed up, on Sunday morning Tim Bollman hiked 4 miles (6 kilometers) to check on the Redding home he built for his wife and two sons 13 years ago. He found rubble.

“There’s not even anything to pick up,” he said. “It’s completely gone.”

Keswick, a mountain town of about 450 people, was reduced to an ashy moonscape of blackened trees and smoldering rubble.

The terrain surrounding nearby Whiskeytown Lake — usually filled in July with vacationers swimming in the clear water — was burned, burning or seemingly about to burn Sunday. A heavy haze hung low over the water, where some of the docked boats had melted.

Firefighters and utility repair crews drove up and down the once-scenic highway, while California Department of Transportation water trucks sprayed roadsides in hopes of preventing potential wildfires from burning across the road, which can cost several million dollars to repair.

Meanwhile, officials said a second firefighter died fighting a huge blaze to the south near Yosemite National Park. Brian Hughes, 33, was struck by a tree while removing brush and other fuel near the so-called Ferguson Fire’s front lines, officials said.

Originally from Hawaii, Hughes had been with California’s Arrowhead Interagency Hotshots for four years and reached the rank of captain. Earlier this month, firefighter Braden Varney was killed when the bulldozer he was operating overturned while he was fighting the flames near the national park.

Some evacuations were lifted, but officials said Yosemite Valley, the heart of tourism in the park, will remain closed until Aug. 3.

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Thanawala reported from San Francisco. Associated Press writers Martha Mendoza in Redding and Christopher Weber in Los Angeles contributed to this report.

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