(Grafton, ND) — A Grafton man has been sentenced to life in prison for sexually assaulting a teenage girl. Police arrested 41-year-old Jose Alberto Hernandez in January of this year for the sexual assault of a 13-year-old girl, and he was charged with gross sexual imposition and solicitation of a minor. He pleaded guilty to the charges in July. Authorities say Hernandez repeatedly sexually harassed a 14-year-old girl via text messages as well. He was sentenced on Monday, and will be eligible for parole after 30 years.