HARRISBURG, Pa. (WHTM)- Blue Bell wants federal regulators to ease up precautions put in place since a deadly Listeria outbreak.

The Houston Chronicle obtained documents through an open records request. In them, the ice cream maker says it has been working with a lab for months to develop tests to meet FDA requirements to prevent future outbreaks.

Now, Blue Bell now wants those safety measures to go back to the industry norm.

The company had to shut down its flagship creamery for months after a recall last year linked to 10 Listeria cases in four states including three deaths in Kansas.