MASON, Mich. -- A former USA Gymnastics doctor pleaded not guilty Tuesday to three counts of first-degree criminal sexual conduct in his home with a girl under 13, charges that Michigans attorney general said are the tip of the iceberg as authorities investigate roughly 50 complaints.Larry Nassar, who was arrested Monday while running an errand at a Lansing-area tire store, was arraigned by video from jail. He was released after 10 percent of a $1 million bond was paid, more than two months after two gymnasts -- including a member of the 2000 U.S. womens Olympic team -- accused him of sexual abuse during medical treatments.Also on Tuesday, a Detroit attorney said he filed a civil lawsuit against Nassar on behalf of a Los Angeles woman who says she was sexually abused about 20 years ago during treatments when she was a 14-year-old gymnast.Its at least the third civil suit filed against Nassar.The woman filing Tuesdays lawsuit is not the girl in Michigans criminal case.Those alleged assaults against the girl occurred between 1998 and 2005, from the age of 6 until the girl was 12. She was not a gymnast, patient or family member, said Attorney General Bill Schuette.He said Nassar, a former associate professor of osteopathic medicine at Michigan State University who lives in Holt in suburban Lansing, committed predatory, menacing acts and stole this young ladys childhood.This is the tip of the iceberg, Schuette said during a news conference Tuesday.University police chief James Dunlap said his department has received roughly 50 complaints.Were dealing with decades of effort to go back and identify witnesses and to compile those for submission to the attorney generals office, he said.Ingham County 55th District Court Magistrate Mark Blumer ordered Nassar to wear an electronic tether and to surrender his passport. He also was prohibited from being present with anyone under 18, including his children, unless another adult is there.A preliminary hearing was scheduled for Dec. 15.Nassar, who could face life imprisonment if he is convicted, has denied wrongdoing.Shannon Smith, one of his lawyers, said his wife -- who was in the courtroom -- and hundreds of people support him 100 percent. We have received countless emails and communications from other doctors, physicians, physical therapists, ex-patients, ex-coworkers supporting him.Assistant state attorney general Angela Povilaitis had asked that bond be denied or, in the alternate, that a very high amount be imposed.She has come forward bravely to report this and to cooperate and prosecute this case, she said.Nassar was fired in September by Michigan State. In October, a former gymnast who was on the national team from 2006 to 2011 filed a lawsuit in Los Angeles, alleging Nassar repeatedly sexually abused her and renowned husband-and-wife coaches Bela and Martha Karolyi turned a blind eye to molestations.Indianapolis-based USA Gymnastics, which has been named in two civil lawsuits, said previously that that it cut ties with Nassar after learning of athlete concerns about him in the summer of 2015.USA Gymnastics today learned about the charges against Dr. Larry Nassar through a media report, it said. As we previously have made clear, when USA Gymnastics first learned of athlete concerns regarding Dr. Nassar, those concerns were reported to the FBI and Nassar was dismissed from further involvement with USA Gymnastics.Detroit attorney Brian McKeen said he filed Tuesdays civil lawsuit in Ingham County.His client lived in East Lansing when she sought treatment for lower back pain in late 1996 and early 1997 from Nassar, McKeen said.This doctor used this young girls innocence and naivet? against her, McKeen said. She trusted her doctors authority when he insisted his treatments were standard procedure, but they were no more than sexual assault and abuse of a child.Smith, Nassars lawyer, had not seen the civil lawsuit Tuesday afternoon and declined to comment on it.The attorney general, who is investigating criminally at the request of the campus police, said his department is in the best position to prosecute instead of the local prosecutor because it is believed that potential crimes crossed into multiple jurisdictions in Michigan and possibly across state lines. He said his office is working with the FBI and federal prosecutors in Michigan.We are unable to comment further due to the ongoing FBI investigation and pending litigation, USA Gymnastics said.---Associated Press writer Corey Williams in Detroit contributed to this report.---Follow David Eggert on Twitter at http://twitter.com/DavidEggert00 . 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LONDON -- The boys from Dunblane havent half done bad.I think were probably each others biggest fans, Andy Murray said Friday when asked about his brother Jamie Murrays achievement of finishing as year-end doubles No. 1 with Bruno Soares.The camaraderie has been there between them from the youngest of ages, when they grew up competing against each other with any piece of sports apparatus they could get their hands on.When we were really young, Jamie would have won most things we did, said Andy. He was 15 months older, so he was bigger and stronger and better than me at most things. He was smarter than me.Then as we started to get older and physically were on more of a level playing field, we were pretty close really at most things. Jamie is a really good golfer. He was better at that. Football, probably me. Then squash and table tennis, more of the racket sports, was pretty close between the two of us really.Andy added, laughing: Well, thats my recollection of it. He might say something a bit different. Thats what I remember.Jamie has largely had to deal with his brother getting most of the spotlight ever since they went their separate ways in their early teens. The elder Murray headed to Cambridge for nine months and then Paris, with Andy going off to Spain when he was 15.While Andys talents as a singles player flourished, culminating in his rise to world No. 1 with three major titles to his name, Jamie has risen to the top of the mens doubles rankings with two of his own slams. Jamie also beat Andy to a first Wimbledon title, winning the mixed doubles with Jelena Jankovic in 2007.Throw in the Davis Cup they helped Britain win together last year, and the Murray family is British tennis royalty.Now, the brothers march toward tennis historry continues apace at the World Tour Finals.ddddddddddddJamie was confirmed Friday as the year-end doubles No. 1 with partner Soares after Nicolas Mahut and Pierre-Hugues Herbert lost their final round-robin match.It capped off a sensational 2016 for the Scot and the Brazilian. Neither man had won a mens doubles slam before they claimed the Australian Open together, having only come together at the beginning of 2016. They also went on to win the US Open.They had an amazing year. They deserve it, Andy continued. Its a great achievement for both of them and Im very proud of Jamie.Its really special to get to watch what hes achieved in the biggest competitions in the sport. Neither of us ever would have expected this when we were growing up. We need to try and enjoy it.Whether Andy finishes the season on top of the singles rankings is still undecided. He has reached the semifinals here for the first since 2012 with Milos Raonic awaiting him.But he could yet see the No. 1 spot snatched away from him this week, should Novak Djokovic outperform Murray.The Serb faces Kei Nishikori in the other singles semifinal Saturday. Should he and Murray both win their matches, Sunday would be the first time in the history of the Tour Finals where the two finalists would not only be playing for the championship but the year-end No. 1 ranking.The whole year has been fantastic for both of us, Andy added of his brother. We would like to finish it perfectly if we can. Still theres a good chance that doesnt happen.Regardless of what happens