An Evans City man has pleaded guilty in Federal Court on bank robbery charges. 33 year old Chad Vaughn is accused of robbing the NexTier Bank on South Main Street in Zelienople back in October of 2018. Authorities said Vaughn got away with over two thousand dollars in cash. Sentencing is set for July 7th. Vaughn faces up to 20 years in prison along with a 250 thousand dollars fine, or both.