Chocolate giant Mars on Tuesday ordered a recall of Mars and Snickers bars from 55 countries after a piece of plastic found in one bar was traced back to its Dutch factory.<br />The move comes after a customer found a red piece of plastic in a Snickers bar bought on 8 January in Germany .<br />The food giant has decided in a "voluntary" fashion and "out of precaution" to issue the recall which covers mostly European nations including the Netherlands, Germany, France and Britain.<br />The Dutch food safety authority posted what it said was a Mars press release on its website, saying a piece of plastic had been found in a product that could lead to choking.