Firefighters battle a blaze at the Barclay Friends assisted living facility in West Chester, Pennsylvania.

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The fire's cause is under investigation

Blaze forces residents and staff to evacuate into cold night

CNN  — 

Four people remain unaccounted for after a nursing home fire in West Chester, Pennsylvania, last week.

The fire began shortly before 11 p.m., West Chester Fire Chief Mike McDonald said. Video from CNN affiliate KYW showed huge flames consuming a number of units in the complex.

Outside the home, first responders and neighbors tended to evacuees who were wrapped in blankets, sitting on plastic chairs and wheelchairs in the cold, with temperatures in the mid- to low-40s.

At least 20 people were taken to hospitals with injuries, including an emergency medical service responder, Chester County spokeswoman Patty Mains said. Details about the injuries were not immediately available.

About 140 to 150 people – residents and staff members – were evacuated, Mains said.

“Emergency personnel have relocated residents to several locations and are working to connect the residents who were transported to the local hospitals or shelter for safety to their families,” said McDonald, the fire chief.

Residents of the facility wait to be taken from the scene Thursday night.

The fire was under control shortly before 1:30 a.m. ET, though firefighters still were battling hot spots, McDonald said.

The fire’s cause was under investigation, he said.

Susan McCardell, whose mother lives at Barclay Friends, told KYW that facility staff and others appeared to do a good job of getting residents out of the complex.

“It seemed like they were being taken care of and moved to a safe and warm facility. We’re very grateful to see that so many people were taken care of, and we’re happy to find our mom,” McCardell said.