emphasized it's not clear where he was trying to scare people or merely throwing the objects away. >> obviously we would like to speak to this person. i would stop short of calling him a suspect. right now because of the time, rush hour, the place a subway station and the items, rice cookers that could be mistaken for pressure cookers, it certainly is the kind of thing that we would want to know why is he placing them there. >> a third empty rice cooker was found on a sidewalk around the same time in the chelsea section of manhattan where a pressure cooker bomb went off. all three rice cookers came from the same manufacturer and the same model. you know the slogan see something say something it? worked today, a transit rider underground alerted a worker