A new study says prisoners in Tennessee serve some of the shortest terms in the nation.

A report by the Pew Center on the states found that on average, a Tennessee prison sentence lasts just under two years. That's about a year shorter than the national average.

One prosecutor in Nashville says the state is ahead of others by enacting alternative punishments or probation guidelines that help reduce the number of inmates.

State Department of Corrections officials added that while offenders are serving less time for property and drug crimes, prison time has increase by 41 percent for violent crimes.