HAMILTON (Mercer) — A woman and her granddaughter died in a house fire early Friday morning.

As torrential rain poured down from Tropical Storm Elsa, fire broke out in a duplex residence on Woodlawn Avenue. The fire spread to the attached home about 3:10 a.m., Mercer County Prosecutor Angelo Onofri told New Jersey 101.5.

Onofri said an adult woman in her 40s and her 9-month-old granddaughter died in the fire. Three other people are also hospitalized. Their identities were not disclosed.

The roof partially caved in during the fire, according to the prosecutor.

Investigators from the Prosecutor's Office and Hamilton police were speaking with family members and were obtaining a warrant to enter the houses.

The New Jersey chapter of the American Red Cross said it was assisting family members.

"This is a very sad day for Hamilton," Mayor Jeff Martin said. "This tragedy touches the heart of everyone. This morning I met with the family to grieve with them and their loved ones and offer our support in any way we can. I want to also thank our first responders for their professionalism and response."

MidJersey.news contributed to this report

Contact reporter Dan Alexander at Dan.Alexander@townsquaremedia.com or via Twitter @DanAlexanderNJ

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