A 66-year-old woman was hospitalized after a fire tore through her Harford County home early Thursday, according to the Maryland State Fire Marshal.

Firefighters from the Susquehanna Hose Company responded to the 600 block of Linden Lane in Havre de Grace, where heavy flames had engulfed the home. It took 65 first responders about an hour to bring the blaze under control.

Investigators said the woman had just turned on her oxygen concentrator in the living room when she heard a pop, followed by a flash of fire. She managed to escape through the front door after a neighbor spotted the flames and called 911, according to the fire marshal’s report.

The woman was treated at the scene before being transported by Harford County EMS to the Maryland Shock Trauma Center in Baltimore, where she is listed in “guarded condition.”

The home and its contents were destroyed, and three cats died in the fire. Damage is estimated at $250,000 to the structure and $150,000 to its contents, according to the fire marshal’s office.

Investigators said no smoke alarm was activated.

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