If Rockefeller, whose real name is Christian Karl Gerhartsreiter, was found not guilty on charges in the Boston area related to the custodial kidnapping of his 7-year-old daughter last year during a supervised visit, he could face deportation to Germany unless he is charged in Los Angeles County. A Boston TV station reported Wednesday that an indictment was pending in Los Angeles. Meantime, jurors on the East Coast asked a judge what prosecutors had to prove in the case, in which the defendant has pleaded not guilty by reason of insanity. But Los Angeles County prosecutors said the investigation into Jonathan and Linda Sohus' death and Rockefeller's role remains ongoing. 'Nothing has been filed,' said Sandi Gibbons, a spokeswoman for the Los Angeles County District Attorney's office. 'It is an ongoing investigation.' If Rockefeller avoids significant time in prison in the New England kidnapping case, he would face deportation and could choose not to fight that move, forcing Los Angeles prosecutors to act before he leaves the country, sources said. In Los Angeles, prosecutors rarely use a grand jury to indict suspects and generally charge them directly. A Los Angeles County grand jury has interviewed witnesses in the case. But that grand jury probe, according to sources, was done to gather information, not to bring a charge. Rockefeller, through his attorneys, has insisted he had nothing to do with the couple's disappearance. But his arrest last year in the kidnapping prompted the Los Angeles County Sheriff's Department to reopen the San Marino investigation. Rockefeller rented a guest house from the Sohuses in the early 1980s, using the name Christopher Chichester. But in 1985, the couple disappeared, and soon after, the mysterious renter also left. Police investigated the disappearance, but the case did not go far. Nine years later, though, as a new homeowner constructed a swimming pool, workers uncovered what is believed to be Jonathan Sohus' skeleton from the back yard. But the trail again went cold until last summer, when Gerhartsreiter -- now using the name Rockefeller -- was accused of kidnapping his daughter during a supervised visit. Authorities eventually determined that Chichester and Rockefeller were the same person. Los Angeles County sheriff's detectives declared him a 'person of interest' in the disappearance and suspected killing of the Sohuses. 