BANGKOK (AP) — When the young Thai woman saw an online ad seeking surrogate mothers, it seemed like a life-altering deal: $10,000 to help a foreign couple that wanted a child but couldn't conceive. The mystery surrounding Shigeta has riveted Thailand and become the focal point of a growing scandal over commercial surrogacy. The industry that catered to foreigners has thrived on semi-secrecy, deception and legal loopholes, and Thailand's military government is vowing to shut it down. Wassana's story, which she shared with The Associated Press on condition that her last name not be used to protect her family and 8-year-old son from embarrassment, offers clues into an extraordinarily complex puzzle that boils down to two questions: Shigeta is being investigated for human trafficking and child exploitation, but Thai police say they haven't found evidence of either. The petite, soft-spoken 32-year-old with a ninth grade education has spent her life in a trash-strewn slum, scraping by selling traditional Thai sweets from a food cart and sharing a mildew-stained tenement with seven relatives. Ratpratan said he is no longer Shigeta's attorney and declined to comment on the women's statements, saying, "I don't want to touch that point because it's a legal matter." After his case made headlines, a group of prominent lawyers sent letters warning Japan's mainstream media not to report Shigeta's name or the names of his family members, according to news organizations that received the letter. [...] several Japanese magazines and online publications have identified him as a son of Japanese tycoon Yasumitsu Shigeta, founder of mobile phone distributor Hikari Tsushin. The company says it can neither confirm nor deny the father-son relationship, calling it "a personal matter," and Thai police and Interpol say they are investigating his family ties. The Thai media was calling it the "serial surrogacy" case, and it had broken just after another scandal involving an Australian couple who paid a Thai surrogate to carry twins, then left behind the one with Down syndrome. The 9-step diagram starts with Shigeta's picture and traces the steps he took to get his babies, from hiring surrogacy clinics and nannies, to registering apartments in the infants' names and completing legal paperwork required for birth certificates and passports. The New Life clinic, which is currently closed pending investigation, stopped working with Shigeta after two surrogates got pregnant and he requested more, said founder Mariam Kukunashvili. The Medical Council of Thailand, meanwhile, spoke with Wassana's doctor, Pisit Tantiwattanakul, before he closed his All IVF fertility clinic and emptied it of all patient files after the scandal broke. Japan has no law banning surrogacy, but the medical industry has issued orders against it that are strictly followed, which could explain why Shigeta flew to one of the few places in Asia where it is openly practiced. Since 2010, he has made 41 trips to Thailand and police say he traveled regularly to Cambodia, where he holds a passport and brought four of the babies.