THORNTON, Colo. (CBS4) – A wildfire burned in Thornton on Wednesday afternoon. The fire was putting out a lot of smoke north of the Denver metro area.

The fire was burning in a residential area near 95th  Avenue and Pecos Street about 3:40 p.m.

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Copter4 flew over the fire which was putting out a lot of smoke. Flames could be seen from Copter4 which was miles away.

(credit: CBS)

(credit: CBS)

Shortly after 4 p.m. the fire seemed under control. The fire was burning in a ravine near homes.

Copter4 flew over a brush fire in Thornton (credit: CBS)

Copter4 flew over a brush fire in Thornton (credit: CBS)

What caused the fire remains under investigation.

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The size of the fire was unknown.

Wildfire Resources

– Visit CBSDenver.com’s Living With Wildfire section.

Wildfire Photo Galleries

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– See images from the most destructive wildfires (Black Forest, Waldo Canyon, High Park and Fourmile) and largest wildfire (Hayman) in Colorado history.