A Casper man who admitted to having sex with minors is heading to prison.

Twenty-one year old Andrew Nelson was sentenced to twelve-to-fifteen years in prison, after pleading guilty on two counts of second degree sexual assault of a minor.

Prosecutors say between February 2010 and December 2011, Nelson had inappropriate sexual contact with a number of girls that were at least fourteen years old.

One of the girls was a runaway he took into Nebraska.

Nelson and the girls eventually admitted to investigators that the incidents occurred.

A CASPER MAN WHO ADMITTED TO HAVING SEX WITH MINORS IS HEADING TO PRISON.

K2 RADIO'S KEVIN KOILE, HAS MORE ON THAT STORY.

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TWENTY-ONE YEAR OLD ANDREW NELSON WAS SENTENCED TO 12-TO-15 YEARS IN PRISON, AFTER PLEADING GUILTY ON TWO COUNTS OF SECOND DEGREE SEXUAL ASSAULT OF A MINOR.

PROSECUTORS SAY BETWEEN FEBRUARY 2010 AND DECEMBER 2011, NELSON HAD INAPPROPRIATE SEXUAL CONTACT WITH A NUMBER OF GIRLS THAT WERE AT LEAST FOURTEEN YEARS OLD.

ONE OF THE GIRLS WAS A RUNAWAY HE TOOK INTO NEBRASKA.

NELSON AND THE GIRLS EVENTUALLY ADMITTED TO INVESTIGATORS THAT THE INCIDENTS OCCURRED.