(LOS ANGELES) — Firefighters were battling a blaze at a Chevron refinery in Southern California late on Thursday, company and government officials said, after a massive fireball erupted at the facility.

It was not immediately clear what caused the blaze, which was burning in El Segundo, a city in Los Angeles County.

“All refinery personnel and contractors have been accounted for and there are no injuries,” Allison Cook, a Chevron spokesperson, told ABC News.

Gov. Gavin Newsom was briefed on the fire, his office said.

“Our office is coordinating in real time with local and state agencies to protect the surrounding community and ensure public safety,” the office said in a statement.

The sprawling refinery, which is located just south of Los Angeles International Airport, has its own fir

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