WASHINGTON AP – A federal judge on Thursday blocked a federal rule allowing people to carry concealed, loaded guns in national parks and wildlife refuges.

The decision by U.S. District Judge Colleen Kollar-Kotelly halts a change in regulations issued in the waning days of the Bush administration and orders further review. She set an April 20 deadline for the Interior Department to review the rule and indicate its course of action in response to the injunction.