OMAHA, Neb. (AP) — A former Ralston, NE., elementary school teacher has been sentenced to over 14 years in prison for inappropriately touching young students. A Douglas County, NE., district judge issued the sentence Wednesday to 60-year-old Nicholas Richter. He has more than 100 days of credit for time served, and he must serve about seven years before he is eligible for parole.

Richter was found guilty in December of three counts of sexual assault of a child. His first trial in August ended in a hung jury. Three young boys ranging in age from 10 to 12 testified that Richter groped them during classes. A middle-aged man also testified that Richter groped him three decades ago, when Richter was teaching in Council Bluffs, Iowa.