Aurora police are looking for a man who tried to lure two young children into his van about 7:50 a.m. Thursday outside Nancy Hill Elementary School on the 700 block of Pennsylvania Avenue on the city's near west side. Police said an 11-year-old girl and her 7-year-old brother were standing on the northeast corner of Illinois and Pennsylvania avenues when a man inside a large, gray van parked on Illinois Avenue told both youngsters to get in the vehicle.