"So You Think You Can Dance" fans haven't seen Alex Da Silva on the show since season four back in 2008, and there's a reason the choreographer has been off the radar: He has been in jail since being charged with raping a former dance student and assaulting another one. On Friday (January 27), Da Silva was sentenced to 10 years in prison for those crimes, TMZ reports.

While the 43-year-old was accused of raping and sexually assaulting four women, he was convicted in September of only one count of rape and one count of assault with intent to commit rape; the jury was deadlocked on the other charges. He was arrested back in 2009 and charged with multiple felonies. Unable to pay the bail set at $2 million, Da Silva has remained in jail for the past two years. On top of his 10 years in prison, he is now required to register as a sex offender for life.

Da Silva appeared on seasons one through four of "So You Think You Can Dance" as a guest choreographer specializing in Salsa dancing. In season two, eventual winner Benji Schwimmer named his Da Silva-choreographed mambo as his favorite routine of the show.

After his arrest, Da Silva did an interview with SalsaFreak.com to clear his name, insisting that he had done nothing wrong with his students. "I know the truth, and I don't even know who the others are," he said, claiming to not even be acquainted with some of his accusers. "It's all a bunch of lies, and people just want to bring me down. If something like that really happened, then they should have gone to the police that night, or the same day, but it was never that way. I have too much to lose. I don't need that type of thing in my life."