CHATSWORTH, Ont. - An 18-year-old woman from Guelph, Ont., is facing charges after she allegedly stripped naked on a highway, ran into a cow pasture and threw mud and feces at police officers.

The alleged incident occurred after police responded to a car crash on Highway 21 west of Owen Sound, Ont., on Sunday.

An officer tried to help an injured woman who exited the car, but police say she began acting irrationally.

Police say the woman smeared *lo** on the officer and then burned herself when she mounted a motorcycle belonging to someone who had also stopped to help.

The woman then allegedly took off her clothes and shoes and ran into a nearby cow pasture, where she spit at pursuing officers and flung mud and feces at them before being restrained.

One officer suffered minor scratches and abrasions.

An investigation showed the woman's vehicle had been involved in two separate fail to remain collisions earlier that day.

The suspect was taken into custody and transported to Grey Bruce Regional Health Centre for assessment.