The Honolulu Medical Examiner's office is investigating a human foot that was found Wednesday in Waialua.  The Honolulu Star-Advertiser is reporting that police are neither confirming nor denying the discovery, and there was no highlight on the subject. CrimeStoppers issued a missing persons bulletin in July regarding a 30-year-old man who was last seen at his family's Waialua farm 1 a.m. July 21. It is unknown whether there is any relation between the foot found in Waialua and the missing man. CrimeStoppers said the man, Bobbie Venenongsoth, was emotionally distraught, and has not been seen nor heard from since. He is 6 feet tall, weighs 200 pounds with black hair and brown eyes. Anyone with information on Venenongsoth is asked to call CrimeStoppers at 955-8300.