During the early stages of the investigation, the police tried to narrow their search to people who had motives to kill José and Kitty. They also investigated potential mob leads, but nothing came of them. As the investigation continued, the police believed that the brothers were most likely the perpetrators, since they had obvious financial motives, and were liberally spending money in the wake of the murders. In an attempt to get a confession from Erik, the police convinced Craig Cignarelli, one of Erik's close friends from high school and a tennis buddy, to wear a wire while having lunch with him at a local beachfront restaurant. When Craig asked Erik if he killed his parents, Erik said "no", but he eventually confessed to doing so to his psychologist Jerome Oziel. After Lyle threatened him, Oziel told his mistress, Judalon Smyth, about the murders, and she told the police about the brothers' involvement. Lyle was arrested on March 8, 1990; Erik turned himself in three days later after returning to Los Angeles from Israel. Both were held without bail and separated from each other. In August 1990, Judge James Albrecht stated that tapes of the conversations between Erik and Oziel were admissible evidence since Lyle violated doctor–patient privilege by threatening Oziel. Albrecht's ruling was appealed, and the proceedings were then delayed for two years. The Supreme Court of California ruled in August 1992 that most of these tapes were admissible, excepting the tape in which Erik discussed the murders. After that decision, a Los Angeles County grand jury issued indictments in December 1992, charging the brothers with the murders of their parents.