CHICAGO (AP) – A Chicago firefighter’s wife has died days after a fire at the family’s Northwest Side home also killed their 7-year-old son.

Summer Day-Stewart, 36, was pronounced dead at 7:30 p.m. on Thursday, Cook County officials said Friday.

Seven-year-old Ezra Stewart was pronounced dead Wednesday evening, the day after the fire, the Cook County Medical Examiner’s Office has said.

The boy, his mother and his two sisters, ages 2 and 7, suffered from smoke inhalation and were rushed to hospitals Tuesday night after being rescued from the burning home.

Chicago Fire Department officials have said firefighter Walter Stewart, who lived in the house, was not part of the fire crew that responded to the fire, but when he heard the address of the fire over radio dispatch, he went to the scene and gave his wife CPR, WBBM-TV reported.

Police said the fire started accidentally in the kitchen.