Aurora police are examining surveillance footage from a grocery store two sisters, Patricia (14) and Maria Chavez (4), visited shortly before they disappeared last night. The footage shows a man following the girls through the store for several minutes. Police showed the video to the girls' mother, Zulema Pena, who said there was, "a man following them, someone right behind them. Following for 10 minutes." Aurora police spokesman Dan Ferrelli said, "It's really hard to tell if his movements could be considered suspicious. That's certainly something we're aware of and we're looking at." more ›