Firefighters in Garland have contained a one-alarm fire on the 1200 block of Merrimac Trail.
When firefighters arrived, they reported heavy smoke coming from the one-story brick home.
As they approached the inside of the home to fight the blaze, they said they encountered a woman who told them to leave.
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The firefighters retreated and called police.
Soon after, police say the woman came out and was taken to a hospital to be checked out.
She made statements leading officers to believe someone else was still inside the house.
Police later entered the home, but no one else was found.
It is unclear if any charges will be filed.
The fire department is investigating the cause of the fire.
NBC 5's Jocelyn Lockwood, Frank Heinz and Holley Ford contributed to this report.