A 21-year-old North Platte man is in jail on felony charges after he allegedly sexually assaulted a young relative.

North Platte Police say they were contacted by the mother of the female victim, who alleged that her 15-year-old daughter had been sexually assaulted by a relative, Isaac Macias, when she was living in North Platte in April and May of 2015.

Police say they launched an investigation and, with the assistance of law enforcement where the girl currently lives, were able to conduct interviews with both the alleged victim and Macias.

On October 6, Macias was arrested and jailed on a charge of first-degree sexual assault of a child.

Nebraska law prohibits anyone 19-years-old and older from having sex with anyone under the age of 16.

According to authorities, Macias has previously been convicted of third-degree sexual assault of a child and is a registered sex offender.