Firefighters have responded to a 1-alarm house fire at 2517 Pacific Ave. in Pacific Heights that created clouds of dark smoke visible as far away as Upper Haight and Hunters Point.

Working fire in #PacificHeights going on right now #SF #firefighters on scene. @IAFFTreg pic.twitter.com/1fjDAqdj9d

— SF Firefighters 798 (@SFFFLocal798) December 3, 2016

At 10:24, the SFFD scanner reported that the “smoke is lightening up,” but a few minutes later, an update indicated that the fire is still burning in the top rear of the building. According to subsequent reports, first responders are now cutting holes in the roof and in a firewall on the third floor to extinguish the fire in the attic.

What looks like a big fire happening on the other side of the city (photo from near Twin Peaks) #SF @sffdpio pic.twitter.com/TVtltxlzbl

— Sanjay Kairam (@skairam) December 3, 2016

The smoke is “very productive,” said a firefighter on scene at 10:33; SFFD is now using hoses to spray the house from the outside to put out the remaining blaze.

[Update: 11:03am] At 10:48am, a firefighter radioed in to report that residents said the blaze may have started in a second-floor bedroom. Ten minutes later, a roll call indicated that 6 engines, 3 trucks and a rescue team were still on scene, along with other assorted responders.

We’ll continue to update this story as more information is available.

[Update: 11:40am] Firefighters on scene told Hoodline contributor Lisa Pollack that the fire is now under control and that there were no injuries. Despite the dense smoke, the fire was reportedly limited to the rear of the building, and no other structures were involved.