PHOENIX, Ore. (AP) — Deadly wildfires in heavily populated northwest Oregon were growing, with hundreds of thousands of people told to flee encroaching flames while residents to the south assessed their losses.

The number of people evacuated statewide because of fires rose to an estimated 500,000 — more than 10% of the state’s 4.2 million people, the Oregon Office of Emergency Management reported late Thursday.

One fire approached Molalla, triggering a mandatory evacuation order for the community of about 9,000 located 30 miles south of Portland. A police car rolled through the streets with a loudspeaker blaring “evacuate now.”

Inmates were being moved from a women’s prison less than a mile from Interstate 5 in Portland’s southern suburbs “out of an abundance of caution,” the Oregon Department of Corrections said.

With two large fires threatening to merge, some firefighters in Clackamas County, which includes Molalla, were told to disengage temporarily because of the danger. Officials tried to reassure residents who abandoned their homes and law enforcement officials said police patrols would be stepped up to prevent looting.

The local fire department said on Twitter: “To be clear, your firefighters are still working hard on the wildfires in Clackamas County. They are taking a ‘tactical pause’ to allow firefighters to reposition, get accountability & evaluate extreme fire conditions.”

“We haven’t abandoned you,” fire officials said.

Residents of the small Oregon town of Phoenix near the California state line walked through a scene of devastation after one of the state’s many wildfires wiped out much of their community. A mobile home park, houses and businesses were burned, leaving twisted remains on charred ground.

The Federal Emergency Management Agency estimated that 600 homes were burned by the fire that started in Ashland and tore through Phoenix, the Mail Tribune of Medford reported.

Oregon officials haven’t released an exact death count for the wildfires but at least four fatalities have been reported in the state. One person was killed in wildfires in Washington.

Oregon officials said they were shocked by the number of simultaneous fires, which stood at 37 Thursday, according to the state Office of Emergency Management.

Gov. Kate Brown said more than 1,400 square miles have burned in Oregon over the past three days, nearly double the land that burns in a typical year in the state and an area greater than the size of Rhode Island.