Seven people are missing after a massive explosion at a fireworks warehouse shook a rural California community, upending Fourth of July celebrations and leading to an investigation into the incident.

Seven people are "unaccounted for" after several explosions at a fireworks warehouse resulted in a fire in Northern California's Yolo County, officials said.It happened Tuesday evening in the community of Esparto at Devastating Pyrotechnics.

At least seven people are missing after a fireworks warehouse in Northern California caught fire and erupted in a massive fireball. Families of those unaccounted for remain desperate for answers. NBC’s Stephanie Gosk reports for TODAY.