The FBI was sending resources to the scene, but agency spokesperson Mike Gifford said there was no early indication of terrorism, CNN reporter Kristen Holmes tweeted.
Officials said during a news conference that they hadn't "ruled out anything at all", in regards to how the explosion happened, according to ABC 7.
The Orange County Fire Authority said the explosion occurred from inside the two-story building at 11 Mareblu Tuesday shortly after 1 p.m.
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Other states and territories supporting the nomination include; Guam, Kansas, Alabama, West Virginia, South Carolina and Maine. "What he has accomplished on the Korean Peninsula certainly makes him deserving".
"As far as what I'm hearing there was no vehicle involved", Carrie Braun of the Orange County Sheriff's Department said. Tony Bommarito and sheriff's officials said later that was not the case. No children were hurt, officials said.
In a late-afternoon briefing, Orange County officials said no cause had been either determined or ruled out, whether a gas leak or an intentional act.
Children and staff at nearby Academy on the Hills preschool initially sheltered in place while the investigation continued, but children were later evacuated to a Target store parking lot so they could be reunited with their parents.
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Trump has acknowledged reimbursing his lawyer for the payment to porn star Stormy Daniels but denies her allegations. The most effective surrogates of all, as my research consistently shows, are first ladies of the United States.
"The corner of that building, the whole bottom floor is pretty much blown out", fire Capt.
Children at a day care across the street from the building were evacuated. Crews on scene of possible explosion in Aliso ViejoOne person was pronounced dead at the scene, and three others were injured, OCFA said.
"Then everyone started running out of buildings everywhere with looks on their faces of just horror", the woman said.
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Partially hydrogenated oils were first introduced into the food supply in the early 20th century as a replacement for butter. Francesco Branca, director of the Nutrition for Health Department at the WHO, emphasized in his statement.