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LAKE CHARLES, La. (AP) — Four members of a Louisiana family were killed when a generator leaked carbon monoxide into their home, hours after they survived Hurricane Laura’s deadly winds and storm surge.

Family members told news outlets this week that 81-year-old Rosalie Lewis decided to shelter with her husband and three relatives in her Lake Charles home as the Category 4 storm battered the coast on Aug. 27.

Emergency crews arrived after the storm to find her; her daughter, her son-in-law and her brother dead. Authorities say a generator placed in the garage filled the home with carbon monoxide during the night.

Relatives say Lewis’ 84-year-old husband survived but was on life support Wednesday.