MABANK, Texas (CBSDFW.COM)  – The State Fire Marshal’s Office is investigating what caused a fire in the Kaufman County city of Mabank that killed a woman and her mother on Monday.

According to the Kaufman County Fire Marshal’s Office, Tina Mercer called 911 around 3:25 p.m. Monday to report her disabled mother and an infant were inside the burning home.

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Deadly house fire in Mabank (Jay Johnson – CBS 11)

Mercer ran inside and was able to rescue the infant.

When she went back inside to try to get her mother, neither of them got out.

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Firefighters found Mercer and her mother’s body inside the burned out home.

They said the infant was not hurt.

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The house is located in the 15000 block of Kaufman County Road 4015 in the Prairieville Community.

Deadly house fire in Mabank (Jay Johnson – CBS 11)