Massive 6-Alarm Fire Engulfs 1 Million Square-Foot Warehouse in Southern California; Arson Suspected (VIDEO) | The Gateway Pundit | by Cristina Laila

A massive 6-alarm fire engulfed a 1 million square-foot warehouse in Ontario, California, on Tuesday.

The blaze broke out just after midnight on Tuesday morning.

Arson is suspected.

More than 100 firefighters responded to the blaze.

According to law enforcement, the facility contains paper products.

“The Ontario Fire Department is battling a 6 alarm warehouse fire,” the San Bernardino Fire Department said.

“The building contains paper products. Units from many neighboring departments are on scene supporting the suppression efforts,” they said.

WATCH:

The Ontario Fire Department is battling a 6 alarm warehouse fire. The building contains paper products. Units from many neighboring departments are on scene supporting the suppression efforts. pic.twitter.com/KLNykaMbgY

— San Bernardino County Fire (@SBCOUNTYFIRE) April 7, 2026

KTLA reported:

Firefighters are battling a massive six-alarm blaze that investigators believe was intentionally set by a warehouse employee in San Bernardino County early Tuesday morning.

Multiple agencies responded around 12:30 a.m. to a fire reported at the approximately one-million-square-foot Kimberly-Clark warehouse near South Hellman Avenue and Merrill Avenue in Ontario.

Video from the scene showed flames ripping through the roof of the warehouse as first-arriving crews immediately called for a second-alarm response to bring in more firefighting resources.

The fire, fueled by paper products stored inside the facility, eventually escalated to a six-alarm incident. Units from several neighboring departments assisted the Ontario Fire Department, according to San Bernardino County Fire officials.

As of 5 a.m., firefighters had shifted to a defensive strategy, pouring water on the hourslong blaze from ladder trucks positioned around the warehouse.