An eastern Iowa man will spend 15 years in federal prison for his involvement with an underage girl. 60-year-old Mark Curtis Senior of Dubuque was sentenced after pleading guilty to one count each of sexual exploitation of a child and receiving child pornography. Based on information released at his plea hearing, Curtis persuaded a 15-year old girl, who lived outside the state of Iowa, to send him nude photos and videos of herself via Facebook – some of which included sexually explicit conduct. Investigators say that Curtis knew the girl was a minor.















