WEST MIFFLIN, Pa. (AP) — Police are seeking a woman who they say urinated on potatoes at a Walmart in western Pennsylvania. West Mifflin police posted surveillance photos on their Twitter account. It is not known when the incident took place. A Walmart representative told WPXI-TV an employee saw what the woman was doing. In a statement, Walmart told the station it “it immediately disposed of the affected products and sanitized the area.”