Police are searching for a woman who approached a 5-year-old child Thursday night. The boy said he was riding on a toy in his yard on Concord Street when a young woman walked up to him. She did not say anything or touch him, Needham police said. The boy said he ran into his house and the woman ran down Concord Street toward Manning Street. Officers could not locate her. The boy told officers she was a white woman with dark hair and was wearing black clothes with white stripes, police said. Police said it is possible that it was a concerned jogger trying to keep the boy from riding into the roadway.