The Rock County Sheriff’s Office arrested a Janesville woman on suspicion of her fourth intoxicated-driving offense Wednesday night.

A deputy observed driving behavior of a possibly impaired driver at about 5:30 p.m. Wednesday at Burbank Avenue and Terrace Street on Janesville’s south side, according to a sheriff’s office news release.

After a traffic stop and investigation, the deputy arrested Manda Skoien, 41, who is being held at the Rock County Jail, according to the release.