Updated

The wife and children of a Chicago firefighter died this week from injuries they sustained during a house fire Tuesday.

Summer Day-Stewart, 36, died at 7:30 p.m on Thursday, following her 7-year-old son Ezra who died Wednesday. She was the wife of local firefighter Walter Stewart.

Day-Stewart and all three of her children suffered from smoke inhalation. 

The couple's other two children – a 9-year-old daughter and a 2-year-old son – were pronounced dead on Friday and Saturday, according to the Cook County Medical Examiner's Office. They were unconscious while being treated in the hospital.

CHICAGO FIRE DEPARTMENT CALLS FOR MASS CASUALTY BUS AFTER EXPLOSION AT RESIDENTIAL BUILDING

Boarded-up Chicago house

Firefighter Walter Stewart was working while his house caught on fire, killing his wife and son. (FOX 32 Chicago)

The house fire originated in the household's kitchen on Tuesday night. Walter was working when a fire was reported at his home.

Though his truck was not assigned to the fire, the father quickly recognized his address. He left in an SUV with the battalion chief and was driven to his home.

ILLINOIS COURT ORDERS RETRIAL FOR CONVICTED CHILD MURDERER TORTURED INTO CONFESSION

Debris from Chicago house fire

The house fire originated in the Stewart's kitchen on Tuesday night. (FOX 32 Chicago)

Fire department spokesman Larry Langford said that Stewart performed CPR on his wife at the scene.

"It’s a living hell he’s going through right now," Union Local 2 spokesperson Pat Quane told FOX 32 Chicago.

CLICK HERE TO GET THE FOX NEWS APP

Teddy bears left at fire scene

Summer Day-Stewart, 36, passed away a day after her son, who also suffered from smoke inhalation, did. (FOX 32 Chicago)

Ignite the Spirit, a Chicago-based nonprofit, is collecting donations for the Stewart family.