A deadly California fireworks explosion caused at least $3.2 million in damage, according to reports.

The blast in the town of Ontario was caused when a stash of fireworks inside a house exploded. It killed two people, destroyed several buildings and damaged others.

It also forced residents to evacuate from about 80 homes for several days.

Relatives have identified the victims of the explosion as cousins Alex Paez, 38, and Cesar Paez, 20.

Officials have had to burn the remaining fireworks to destroy them, KTLA reported. It’s unclear what caused the fireworks to go off.