MARSHALL COUNTY, Ind. -- A woman who went to the Indiana State Police post to get a VIN check completed was arrested on preliminary charges of OWI when troopers noticed she appeared impaired, according to ISP.

Around 4 p.m. Monday, 33-year-old Rosanda Taylor of South Bend drove her SUV to the Indiana State Police Bremen Post to get a VIN check on a purple Chevy she was towing behind the SUV.

While speaking with Taylor, the trooper could smell the odor of marijuana and noticed signs of impairment, police said.

The trooper used his K9 partner to conduct a free air sniff on the woman's vehicles.

The K9 alerted to the odor of narcotics on both vehicles, reports said.

While searching the SUV, troopers found a partially smoked hand-rolled cigarette suspected to be marijuana.

Taylor was arrested on preliminary charges of possession of marijuana and operating while intoxicated.