A fireworks factory in California caught fire and exploded in a massive fireball on Tuesday, detonating its entire payload in a jaw-dropping pyrotechnics display. The warehouse, located in the Esparto area northwest of Sacramento, is still actively burning, the Sheriff’s Office confirmed, and it is currently unknown whether there are any injuries or worse. “Everything is very preliminary right now,” District Fire Chief Curtis Lawrence told reporters on Tuesday. Video footage of the scene captured by a news helicopter showed at least one large fire and a huge pillar at the scene of the burning building, punctuated by bursts of detonating fireworks. The cause of both the fire and explosion is still unknown, although a representative from the Sheriff’s office said no criminal activity is believed to have taken place. Drones are being used to assess the damage at the 80-acre site, and an evacuation order has been issued in Yolo county where the fire took place.