A fire that broke out Sunday afternoon in the 1200 block of Point Street in the Rocky Point area of unincorporated Denton County extensively damaged three homes and left one person injured, officials said.

The blaze began shortly after 2 p.m. Several neighbors said they called 911.

Smoke visible for miles

"We saw the black smoke, and then they started calling all the mutual aid, all the fire departments from the local cities, jurisdictions," said Joseph Weaver, a witness.

Officials said one of the homeowners was treated on scene by first responders and has since been cleared.

"I believe the homeowner had some slight burns; she was checked out by medics and was cleared on scene," said Jon Bailey, division chief for the Little Elm Fire Department.

Crews face access challenges

Crews faced several challenges. They had difficulty accessing the location due to the area's infrastructure and had to call for backup because there are no fire hydrants in the neighborhood where the fire occurred.

Several tankers were seen going back and forth after filling up nearby. Close to 60 firefighters helped put out the flames. Crews stayed on scene to monitor for hotspots.

Cause under investigation

The cause of the fire remains unknown. Authorities said the investigation is ongoing.

CBS News Texas will provide additional information as more details become available.