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

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.

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