The Cameron County Sheriff's Department has arrested a man on child abuse charges after finding out he had sex with his 13 year-old girlfriend. Vicente Fernandez, who is 18 years-old, was arrested on Monday and charged with three counts of sexual assault of a child and continuous sexual abuse of a child. The investigation began on April 12th, when the mother of the girl, took the teen to the hospital for a pregnancy test, but the results were negative. A specialist with the Cameron County Children's Advocacy Center determined there had been sexual intercourse between the victim and Fernandez. His bond was set at $250,000 dollars and he remains in jail.