State Police picked up 27 year old Christopher Etheridge of Indianapolis on State Road 37 near Martinsville.
During a traffic stop, the trooper received conflicting stories from Etheridge and a female passenger.
It turns out the girl is 13 year old, and had met Etheridge on-line.
He coerced her to go with him to the Morgan-Monroe State Forest where they engaged in sexual activity.
Etheridge is in the Monroe County Jail facing 20 to 50 years in prison if convicted.