HUNTINGTON, W.Va. -- An Ohio man found with drugs during an August traffic stop pleaded guilty to a federal distribution charge on Monday. Antoine Walker, 27, of Columbus, Ohio, pleaded guilty to conspiracy to distribute heroin and oxycodone pills before U.S. District Judge Robert C. Chambers in Huntington. Ohio State Police stopped Walker's vehicle on Aug. 7 and found approximately 300 grams of heroin and about 498 oxycodone pills, according to a news release issued by U.S. Attorney Booth Goodwin. Walker told police that he planned to drop the drugs off to an associate in Huntington. He faces up to 20 years in federal prison when he is sentenced on April 14.