A gas well in the northern part of the city near a housing development caught fire shortly before 10 p.m. Thursday, officials said.
Fire crews continued to work to extinguish the fire an hour later after a battery tank and gas well head caught fire, city spokeswoman Lindsey Baker said.
“We believe it was a lightning strike,” Baker said.
The well site is off Interstate 35 and West Windsor Drive.
Baker said no evacuations had been ordered as of 11 p.m. She said she had no further details.
In November, Denton voters approved a ban on future fracking, but that did not affect existing wells.