Overview
- The blast occurred shortly after 4:30 p.m. Monday at 16th and Guerrero in San Francisco’s Mission District.
- Firefighters extinguished the blaze by about 5 p.m. and remained on scene to ensure stability.
- An adjacent building was evacuated as a precaution, and a hazardous-materials team monitored air quality.
- San Francisco Fire Chief Dean Crispen said an excavator may have scraped a gas tank, igniting leaked fuel, and the cause remains under investigation.
- At least nine fire department vehicles, including six engines, responded, and witnesses reported a heavy smoke plume and a singed excavator on site.