One person is dead after a house fire in Simi Valley, which authorities believe may have been caused by a possible explosion Thursday afternoon. The Ventura County Fire Department said they received calls around 11:48 a.m. about a possible explosion that could have been caused by fireworks on the 1600 block of Edmund Street.

California has seen a spate of accidental fireworks explosions leading up to the Fourth of July with a Wednesday morning detonation killing 1 in a Simi Valley home and a similar incident critically injuring two people in a Bay Area residence.

A person is dead after fireworks detonated in the garage of a house in Simi Valley on Thursday, sparking a fire and sending a large black plume of smoke into the air. Sandra Mitchell reports July 3, 2025.

A fire burned at least four homes in the Pacoima neighborhood of Los Angeles before being brought under control Thursday night.

At least one person was hospitalized and four homes were burned during a fireworks-related fire in Pacoima Thursday night, according to the Los Angeles Fire Department. LAFD said it started at roughly 9 p.