A 2-year-old boy died early Friday and three family members were hospitalized as flames swept their home on the north side of Carrollton.
Seven people, including two adults and five boys, lived at the two-story home in the 4200 block of Wild Plum Drive, police said.
The blaze was reported about 2:11 a.m., said Officer Dustin Bartram, police spokesman.
The neighborhood is east of the intersection of Old Denton Road and East Hebron Parkway in far northwest Carrollton.
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"A neighbor heard a commotion outside," Bartram said. "She looked outside and saw smoke coming from the home.
"Carrollton officers and firefighters arrived on scene and found the residence fully engulfed in flames."
A man, his girlfriend, and his five sons, ages 2 to 13, lived there, Bartram said.
"Everyone was able to escape the residence with the exception of the 2-year-old male," he said.
The father had burns to his hands, a 4-year-old son had minor burns to the face and shoulder, and a 12-year-old son suffered smoke inhalation, Bartram said.
They were taken to Baylor Medical Center at Carrollton, Bartram said.
Police and firefighters declined to identify the child, but they expected his name to be released later by the Tarrant County Medical Examiner's office.
The cause of the fire was unknown early Friday.
"A cooperative investigation with the Carrollton Police Department and Fire Department is ongoing," he said.
The child was grieved throughout the community, Bartram said.
"Neighbors were out there and you could tell they were distraught and very concerned," Bartram said. "For firefighters as well as police officers ... it's a difficult thing to take.
"A lot of us have children that same age."