Nine vehicles have been stolen Oshkosh since the start of September.
Oshkosh Police say they've been busy taking stolen auto reports.
Of the nine car thefts, seven of those cars were left unlocked with the keys inside. In other two thefts, the car was stolen by someone the owner was acquainted with.
Five of those cars have been recovered and police have arrested a 15-year-old girl.
Two cars were recovered in Oshkosh, two in Waushara County and one car was recovered in Milwaukee.
Police are using this as a reminder for people to always lock and remove your keys.