This is the second time he's sexually abused a minor in less than a year.
Matthew Boegel, 19, is heading to prison for violating his probation through the furnishing of marijuana to underage girls and for sexual abuse of a minor.
According to the Knox County District Attorney's Office, Boegel will now serve three and a half years in prison, after which he will have a three year probation period.
This comes just months after Boegel was released from jail for the sexual abuse of girls as young as 12 years old.
The prison sentence he is serving is the suspended sentence from the first case, and he will also serve his new prison sentence concurrently.
Prosecutors said the reason his sentence isn't longer, is because the age of his most recent victim changed the sexual abuse charge to a misdeamoner, which only carries a maximum of one year of jail time.
Christopher Fernald, Knox County Assistant District Attorney, said Any crime agaisnt a child, and especially a sex crime, is something we take very seriously, but the legislature has deemed that if a child is under 14 and there is a sex crime than it is a felony and if the child is under 16 but above 14 than it's only a misdemeanor."
Boegel is expected to be back in court for a probation hearing sometime next month.