1 dead, 3 hurt in Southern California explosion

1 dead, 3 hurt in Southern California explosion

The fire at the building at 11 Mareblu - an outpatient medical clinic - was quickly doused following the roughly 1:10 p.m. explosion, but hazardous materials officials and bomb squad investigators were at the scene trying to assess the situation and ensure there was no further danger, Orange County Fire Authority Capt. The person who died was inside the building when the blast occurred.

"We have not found any type of specific device inside of the building right now that would tell us or lead us to exactly what the device was - if there was a device", Orange County sheriff's Cmdr.

Street closures due to an explosion in Aliso Viejo, Calif.

However, Orange County Sheriff's Department spokeswoman Carrie Braun said no auto was involved in the explosion and there is an investigation to find out what caused it, according to NBC. No children were injured, officials said.

This photo taken from video provided by KABC-TV shows a building after an explosion in Aliso Viejo, California, May 15, 2018.

A daycare and preschool are near the site of the explosion, but authorities said all of the children are safe.

There are unconfirmed reports of explosive devices on the scene of the blast in Orange County.

McWilliams said she saw two burned women staggering out of the building, covered in ash and soot.

Fennessey says the blast involved a building under renovation. Crews on scene of possible explosion in Aliso ViejoOne person was pronounced dead at the scene, and three others were injured, OCFA said. No children were injured, officials said.

It wasn't immediately clear how many people were hurt, but authorities said there were at least two patients transported.