An on-duty police officer struck a woman walking in a marked Lethbridge crosswalk Wednesday evening and it's going to cost him.

The officer, in a marked police car, left the University Drive Alliance Church parking lot just before 11 p.m. and was turning left (eastbound) on Columbia Boulevard when he hit a 27-year-old woman walking northbound at the Berkley Place crosswalk, police said.

He tried to brake but wasn't able to avoid her, police said, adding that he got out of his vehicle right away to help the injured woman.

The incident was witnessed by two other police officers and a civilian.

The pedestrian was left with minor injuries but didn't require medical assistance.

The officer was issued a $776 ticket and had four demerit points applied to his licence.