Bank Robber or Robbers?

June 15th -- a man with pot belly, wearing a white baseball cap walks into an Arvest bank, hands a teller a note demanding money and walks out with an undisclosed amount of cash. June 27th -- a man fitting the previous description walks into another arvest bank on College Avenue in Fayetteville, demands cash and walks away scott free. Then on Thursday an even scarier situation. A man with a pot belly and white baseball cap approaches a teller at a regions bank in springdale...This time with a gun...He again walks away with an undisclosed amount of cash....but is the same man responsible for all three robberies and maybe another in Fort Smith? Some speculate the crimes could be the work of a copy-cat robber but police say they do believe its probably the work of a single person and a quick comparison of the surveillance videos shows what appears to be one man robbing three banks. If you have any information about any of theses crimes youre asked to contact authorities and a one thousand dollar reward is offered for any information that leads to an arrest.