By Joan Murray

MIAMI (CBSMiami) – The fourth child from last week’s deadly house fire passed away on New Year’s Day.

The devastated family of four children who died after a smoky fire swept through their Miami home on Monday returned Thursday to retrieve belongings.

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“Those kids were the pride and joy of the family. We mourn. We are heartbroken,” said their uncle, Chris Fernandez.

The home in the 3000 block of NW 18th Terrace near the Miami International Airport erupted in flames Monday morning.

Neighbors broke windows trying to free the trapped children.

Firefighters said they arrived 11:30 a.m. and pulled the four children out.

All four were given CPR and taken to Ryder Trauma Center.

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The 1-year-old, 6-year-old and 11-year-old children were pronounced dead at the hospital. The 8-year-old died New Year’s Day.

Police have identified the children as 1-year-old Naziyah Fernandez, 6-year-old Nomad Lopez, 8-year-old Nainalee Lopez and 11-year-old Heilyn Mejia.

Two women who were also at the home, identified by police as the mother of three of the children and their grandmother, were also taken to the hospital for treatment. They continue to recover.

“As you may imagine, she is distraught at this moment but she is surrounded by family, surrounded by love,” Fernandez said of the children’s mother.

A firefighter was treated for smoke inhalation. The firefighter was released from the hospital Monday night.

Fire investigators said the heaviest smoke damage is in the rear of the home, but it’s unclear how it started.

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A GoFundMe campaign has been set up to honor the victims and support the families.