San Francisco firefighters were battling a raging three-alarm blaze in the Mission District on Wednesday evening, officials said. Smoke rose from the roof of a residential building and filled the area around 22nd and Mission streets as onlookers crowded the area. The smoke could be seen for miles around the city. Dozens of firefighters were at the scene battling the blaze. Check back for details. Vivian Ho is a San Francisco Chronicle staff writer.