An Abilene man jailed in Riley County is facing new charges of child sex crimes, stemming from his involvement with a minor online while incarcerated.

Alvin Mason was arrested Thursday after officers found the 39-year-old abused his inmate privileges with a tablet, engaging in inappropriate acts with a 15-year-old girl online. Officers identified the crime while monitoring the device’s activity.

Mason is charged with electronic solicitation of a child, sexual exploitation of a child, aggravated intimidation of a witness, contributing to a child’s misconduct and promoting obscenity to a child. Mason was being held on multiple failure to appear charges.

He remains jailed on a total $701,000 bond.