By MICHAEL BALSAMO and AMANDA LEE MYERS
Associated Press
ALISO VIEJO, Calif. (AP) - A business acquaintance of the woman killed in a Southern California office building explosion has been arrested on suspicion of possessing an unregistered destructive device, the FBI said Thursday.
The arrest of Stephen Beal, 59, followed a search of his Long Beach residence by authorities, FBI spokeswoman Laura Eimiller said in a statement.
Eimiller stressed that Beal was not being held in connection with Tuesday's explosion. She said he was expected to appear in U.S. District Court in Santa Ana later in the day and no additional details would be available until a federal criminal complaint is issued.
Beal's Facebook page has many photos of him traveling with the blast victim, Ildiko Krajnyak, 48, a licensed cosmetologist who owned the day spa where the blast occurred. Their travel destinations included Mexico, Canada and Portugal.
State documents show Beal and Krajnyak as officers in a skin care business called I&S Enterprises.
Authorities have declined to publicly say if they believed the victim was the target, but one official briefed on the investigation told The Associated Press the woman had been the intended recipient of an explosive package.
Remnants of a device were found inside the badly damaged spa where the powerful explosion shook the city of Aliso Viejo, about 50 miles (80.5 kilometers) south of Los Angeles. The blast tore a corner off the building that houses medical offices. Two patrons were seriously injured.
"We do not believe this was an accident," said Paul Delacourt, special agent in charge of the FBI's field office in Los Angeles. "Although the damage was extensive, there are some components that we have located at the scene of the explosion that are inconsistent with what one might expect to find at this business."
Investigators were working to determine a motive and figure out exactly how the device got to the spa, Delacourt said. No arrests were made.
The blast is believed to have been caused by a package sent to the spa, two officials told the AP. The spa owner was believed to be the target, one official said.
The officials were briefed on the investigation but not authorized to discuss the matter publicly and spoke to the AP on condition of anonymity.
Meanwhile, friends of the victim set up a fundraising campaign to cover her funeral costs and fly her son home from Seattle, where he attends college.
Krajnyak was originally from Hungary and had just visited there, according to her Facebook page and a neighbor. Her Facebook page showed photos from her home country, including a selfie outside the clinic where she trained to become an aesthetician 30 years ago.
Her Orange County business offered services such as facials, waxing and wrinkle treatments.
A voicemail recording at her business said the spa was closed through Monday and would reopen Tuesday, the day of the blast.
Irene White, a friend, read a statement Wednesday on behalf of Krajnyak's family, calling her death "a complete shock." The family asked for privacy as they mourn "a mother, a wife, a daughter and a friend." She said the family is cooperating with investigators.
The two customers injured underwent surgery Wednesday and were expected to survive. A third victim was treated for smoke inhalation.
Search warrants were served at the business and two other locations, including the Long Beach house.
They also searched Krajnyak's house in Trabuco Canyon.
A neighbor there who would only give her first name as Tiffany said Krajnyak lived there with her estranged husband and mother, whom she cared for.
The couple, although separated, continued to live under the same roof, the neighbor said. Court records show they had filed jointly for bankruptcy in 2014 and the case was dismissed and closed Monday.
Attorney Andrew Bisom, who represented Krajnyak and Ronilo Vestil during the Chapter 13 bankruptcy proceedings, said they were far along on their mandated payment plan but hadn't completed it.
Bisom did not know them well and said there was nothing that stood out about them or their case.
The two-story building where the explosion had blown siding off the walls and shattered windows was closed Wednesday as bomb technicians and investigators from the Orange County Sheriff's Department, the FBI and the Bureau of Alcohol, Tobacco, Firearms and Explosives sifted through debris.
Pieces of the explosive device recovered were sent to the FBI's laboratory in Quantico, Virginia, to be analyzed, Delacourt said.
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Balsamo reported from Los Angeles. Associated Press journalists Amy Taxin in Orange, Brian Melley, Christopher Weber and John Antczak in Los Angeles and researcher Rhonda Shafner in New York contributed to this report.
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