A Beatrice man was arrested Thursday morning for first degree sexual assault. According to court documents, July 7 the mother of a 15-year-old victim’s, made a complaint to the Beatrice Police alleging that a man in Beatrice was sexually involved with her 15 year old daughter. During a interview, the victim admitted to police that she was sexually involved with a 20-year-old male on three separate occasions in June of 2010. She identified the man as Marcus Lineweber, 20 of Beatrice. On Wednesday, Lineweber admitted to be sexually involved with the 15-year old female. Lineweber was arrested for first degree sexual assaul, a Class II felony A $25,000 bond has been set for him.