(AP) — Five people have been charged with murder in a deadly Northern California explosion at a fireworks warehouse that killed seven people and shook a tiny farming community, authorities said Friday.

The charges stem from a grand jury indictment that found five people, including a former Yolo County Sheriff lieutenant, responsible for the explosion that injured two others, Yolo County Deputy District Attorney Clara Nabity said.

The deadly fireworks explosion near the community of Esparto sparked a massive fire and led to nearby Fourth of July celebrations being called off.

The warehouse went from having 13 fireworks storage containers in 2015 to 50 last year.