WASHINGTON (Reuters) -The governor of the U.S. state of Nevada says that offices have closed, websites are offline and phone lines are patchy following an unspecified "network security incident." In a post to X, the social media site, the office of Nevada's Governor Joe Lombardo said that "some state websites or phone lines may be slow or briefly unavailable during recovery." Reuters was unable to reach the governor's website, along with several other Nevada state sites, late Monday.