Explosion at Aliso Viejo Medical Building was initially thought to be a vehicle slammed into the building.
"At this point, we do not believe this was an accident", said Paul Delacourt, special agent in charge of the FBI's field office in Los Angeles. "We're going to take each precaution doable earlier than we go in".
In a news conference Tuesday night, Orange County Sheriff's Department Commander Dave Sawyer said it was unclear whether the explosion was intentional or accidental.
"It's terrible, it's a tragedy", Orange County Fire Authority spokesman Tony Bommarito told ABC News. They said they believe the explosion came from inside the building, Bommarito said, since the doors and windows on the bottom floor were "blown out".
But while a law enforcement source told CNN that the explosion may have been detonated on objective, the Orange County Sheriff's Department did not confirm the information unnamed sources were providing to the media.
After the explosion, bomb squad investigators arrived on the scene to search for more unsafe devices, while children at a nearby day care were evacuated.
A sheriff's official said late Tuesday that no specific device had been found.
The identity of the female victim killed has not been released. She and the three injured were likely in close proximity to the explosion, Sawyer said.
"And the ground shook", he said. Investigators are interviewing the three injured.
IPL: RCB decimate KXIP by 10 wickets
Ashwin Run Out for a duck! The hitter from West Indies has been hitting the ball hard and far amassing fast runs in the process. Tye threw his wicket once again to a short ball as he edged it back to the wicketkeeper and there was no looking back for RCB .
"When I was playing outside I heard the big crash, I thought it was a garbage truck but it was a building that smashed", 6-year-old Kingston Dik told KNBC-TV.
Officials said the blast appeared to be an intentional act caused by a package that specifically targeted the office where the explosion occurred. "While the ground was shaking.my body jolted and my head hit the wall".
Nothing indicates there were any threats made before the blast, which appeared to be concentrated in a suite on the first floor of the building, Sawyer said.
Bommarito said one of the injured people suffered from smoke inhalation, but the extent of the other victims' injuries was unknown.
Shin said he and others hurried down the stairs to get out of that building, and saw "two holes in the wall" of the medical facility. There is no specific person that authorities are searching for right now, he added.
Orange County Sheriff's Department spokeswoman Carrie Braun says investigators worked through the night and were still at the scene Wednesday morning.
There's no "initial indication" of terrorism right now, Mike Gifford, an Federal Bureau of Investigation spokesman in Los Angeles, said, though authorities will continue to investigate possible terrorism out of caution.
Neighbors of Krajnyak said that she and her husband were separated but still living in the same house.
Yesterday, OPEC downplayed the impact of the United States shale boom, but warned about USA trade squabbles. On Monday, however, markets were held in check by news of an increase in US drilling for oil.
Also at 67 was Keith Mitchell, who only got into the tournament Wednesday when Paul Casey had to withdraw with an injury. And he putted like he was fed up with not seeing enough go in. "The greens were receptive, they're rolling flawless ".
The right of first refusal for the Minority Shareholders will expire if Walmart owns 85% of the outstanding shares of Flipkart . Furthermore, Walmart has shed some light on its plans to come out with an initial public offering (IPO) for Flipkart .
You may be tempted to walk out of The House That Jack Built before then, but you'll definitely be talking about it afterwards. In a 2017 interview with The Guardian , Von Trier said the film "celebrates the idea that life is evil and soulless".
James, who managed just 15 points in the Game 1 loss, has won five consecutive East playoff series after losing the series opener. Asked in the locker room by ESPN after the game if his head was OK, James nodded solemnly and said, "I'm OK".
Reports suggest that the windshield was part of the original aircraft and had no previously recorded faults. The incident happened when the plane was flying from Chongqing to Lhasa during the early hours of Monday.
Olsson said that the academy was working to find new members and new forms for its work internally and externally. The prize has been postponed or cancelled only a handful of times , for instance during World War Two.
The newly found vulnerability has the potential to reveal encrypted emails in plaintext, including emails sent in the past. It recommended that users switch for the time being to secure messaging app Signal for sensitive communications.
Laurel or Yanny? The Audio Version of 'The Dress,' Explained
An audio recording of what some people hear as a robotic voice saying " Laurel ", has been heard by others as " Yanny ". What you expect to hear is, to a large extent, what your brain will hear-and what your brain hears is all that matters.
Stalker 2 Development Confirmed, Launches in 2021
A similar message appeared in the official group of the game " Cossacks 3 ", which also deals with the Studio GSC Game World . There's bugger all info available at the moment, but fans of S.T.A.L.K.E.R. can rejoice: you're getting a sequel.
Best-selling novelist Tom Wolfe dies at 87
Colter joined amNewYork as associate editor in 2017, and has worked as a news editor and designer in New York City since 2011. Reports suggest he was battling an infection and pneumonia in hospital when he died.
Judge: Mueller can prosecute Manafort
She cited an August 2017 memo by Deputy Attorney General Rod Rosenstein that prosecutors had filed in the case. The judge there is weighing a similar request to dismiss a tax- and bank-fraud case against him.
Barcelona star Lionel Messi shuts down Man City hopes
But despite an impressive debut season in France, speculation has been rife that Neymar could be set to move on again. Messi told TyC Sports on Tuesday that 'it would be bad , for all that Ney means to Barcelona '.
Mercedes-AMG GT lineup adds S Roadster variant
This means sports seats wrapped in Artico faux leather and Dinamica microfibre with the optional extra being nappa leather. Powertrain modes are further customizable, with five settings: Comfort, Sport, Sport+, Race, or mix and match Individual.
Republican primaries for special elections Tuesday
Department of Homeland Security offered in mid-April to do a free assessment of any city, county or state system, upon request. Tom Marino, R-Williamsport, who represented the old 10th District, will face off against Doug McLinko, of Bradford County.
Hawaii volcano eruption costs tourism industry millions
Geological Survey, a lava flow moves across Makamae Street in the Leilani Estates subdivision near Pahoa on the island of Hawaii. The volcanic vents, or fissures, have gobbled up dozens of homes and vehicles, with 37 structures so far destroyed.