Southern California building explosion investigated as intentional

Southern California building explosion investigated as intentional

Southern California building explosion investigated as intentional

Remnants of an explosive device were found inside the badly damaged spa where the powerful explosion Tuesday afternoon shook the city of Aliso Viejo, about 50 miles (80.5 kilometers) south of Los Angeles, and tore a corner off the building that houses medical offices.

Formal identification of the body was continuing but authorities believe it was Ildiko Krajnyak (IL-di-koh KRY-nyak), a licensed cosmetologist, who owned the spa. In addition, investigators said they recovered materials at the scene that led them to believe it was not an accident.

Bomb technicians and investigators from the sheriff's department, the FBI and the Bureau of Alcohol, Tobacco, Firearms and Explosives were sifting through debris left at the blast site.

Sheriff's officials were expected to hold a news conference at noon.

Associated Press writer Michael Balsamo in Los Angeles contributed to this report.

Investigators believe an explosion at a medical office in southern California that killed one woman may have been intentional, USA media reports say.

Children are evacuated from a nearby school.

The ground shook and it felt "almost like an quake, but a big earthquake", a witness in a nearby building told CNN. A third person suffered smoke inhalation.

Earlier, a law enforcement source told CNN that the explosion may have been detonated on goal, butthe source also cautioned that the investigation was in its preliminary stages. Tony Bommarito, a spokesman for the Orange County Fire Authority. Three search warrants have been served in connection with the investigation - at the day spa business where the blast occurred, at a location in Long Beach and at another location in Trabuco Canyon, investigators said.

"At this point, our working theory is that this explosion was caused by a device", said Paul Delacourt, assistant director of the FBI's Los Angeles office.

One woman was killed and three other people were injured in Tuesday afternoon's explosion in Aliso Viejo.

Mary McWilliams told the Orange County Register that she arrived for an appointment to find smoke surrounding the area and vehicle alarms going off.

Nothing indicates there were any threats made before the blast, which appeared to be concentrated in a suite on the first floor of the office building, Sawyer said. McWilliams says one woman had skin peeling on her arm.

Still, it is not yet known if she was the victim killed, as the coroner has not yet formally released the deceased woman's name.

Their conditions were not immediately known.

Federal, state and local authorities, including the FBI and the Department of Homeland Security, are investigating the blast, which occurred on the first floor of a building that was under renovation. Barnes initially said she was 40 years old; the sheriff's office later said that she was 48. But a neighbor of Beal's said the two broke up about a month ago.

There was no immediate information about the person who was killed.

The blast, which blew out almost the entire first floor, sent plumes of white smoke into the air and debris flying into the parking lot.

Authorities say the dead woman had been inside the building.

The explosion sparked a fire at 11 Mareblu at about 1:10 p.m. Tuesday, but it was quickly doused after a large-scale response by fire and sheriff's officials.

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