Human remains have been found at the site of a massive fireworks warehouse explosion that detonated in Northern California earlier this week, and where seven people remained unaccounted for, officials

The San Francisco-based company is known for staging large-scale fireworks displays across California and the U.S.

Seven people are still "unaccounted for" in Yolo County's town of Esparto after several explosions at a fireworks warehouse resulted in a fire, officials said.