Beatrice Police have arrested a male after an investigation into internet sex crime. 48 year old Richard L. Graham was arrested Tuesday night and booked on suspicion of sexual assault through use of a computer. Lieutenant Mike Oliver says the arrest stemmed from a three-week investigation. Oliver says the number of such arrests are increasing because law enforcement is getting more active investigating such cases. The Nebraska State Patrol has been investigating such crimes through an internet sex offense task force. Oliver says the arrest was made at Astro Park. Graham resides at a downtown apartment.