WAUKESHA, Wis. - A Wisconsin teen convicted of using Facebook to blackmail dozens of classmates into sex has been sentenced to 15 years in prison.

Nineteen-year-old Anthony Stancl of New Berlin showed no emotion as the sentence was handed down Wednesday.

Stancl pleaded no contest in December to two felonies, including repeated sexual assault of a child.

He apologized during sentencing, saying he has learned to understand what his victims went through.

He had faced a maximum 30-year sentence.

Stancl is accused of posing as a girl on Facebook and tricking more than 30 male classmates into sending him naked photos of themselves, then using the photos to blackmail them for sex.