Firefighters needed to extinguish flames at Empower Field at Mile High, home of Denver Broncos

The Denver Fire Department responded to a fire at Empower Field at Mile High, home of the Denver Broncos, on Thursday.

The team said a small fire occurred in a construction zone near a lounge area and the third level of seats, which was quickly evacuated as a precaution. No injuries were sustained, the team said, but firefighters discovered "heavy fire and smoke" upon arrival and were needed to extinguish the flames after sprinklers did not contain the blaze.

Black smoke could be seen billowing out of the stadium. The fire was under control by 3 p.m. local time, per the fire department, which said 75 individuals responded to put out the fire.

The stadium is nicknamed "Mile High" because of Denver's elevation above sea level.

"This type of plastic that the seats are composed of burns with — not only significant ferocity — very, very large flames, but also produces a tremendous amount of black smoke due to the synthetics and petroleum products that are used," DFD Capt. Greg Pixley said, according to 9News. "That meant that that fire was going to need a great deal of help from our firefighters."

Pixley told reporters the fire spanned an estimated 1,000 square feet at least.

This article originally appeared on USA TODAY: Denver Broncos stadium Empower Field at Mile High catches fire