sffd_firefighters.jpg12:50 PM: San Francisco firefighters quickly controlled two one-alarm fires that were reported almost simultaneously this morning, a fire department spokeswoman said.

The larger fire was reported at 10:51 a.m. at a residential building in the 2900 block of Jackson Street, near Broderick Street.

It appears the blaze was sparked by contractors doing some plumbing work on the second floor, fire department spokeswoman Mindy Talmadge said.

She said it was initially thought that flames had spread through the walls to the third story, but that in the end, the fire was confined to the second floor.

No one was displaced, and the fire was controlled at 11:10 a.m., she said.

The second incident was an oven fire in the 1200 block of 34th Avenue. That fire was also extinguished quickly, she said.

No injuries were reported in either incident.

11:38 AM: San Francisco firefighters are responding to two reports of fires this morning, a fire department spokeswoman said.

One fire was reported at 10:51 a.m. in the 2900 block of Jackson Street, which is near Broderick.

Crews are investigating a fire on the second floor of a building there that may have spread through the walls to the third floor, department spokeswoman Mindy Talmadge said.

The second blaze, an oven fire, is in the 1200 block of 34th Avenue, which is near Lincoln.

As of 11 a.m., both fires required just a one-alarm response.

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