Authorities in Northern California have found the bodies of all seven people missing since an explosion last week at a fireworks warehouse that caused a wildfire and shook a tiny farming community.

The cause of the fire, which burned 78 acres, remained under investigation, according to Cal Fire, the state firefighting agency.

Authorities in northern California have confirmed the recovery of the bodies of seven people who had been reported missing following last week's explosion of a warehouse storing fireworks near Sacramento.