Unknown cyberattackers have hit the federal court system, making it difficult for the public to access cases and making it impossible in some instances for lawyers to file documents.
Karen Redmond, a spokeswoman for the Administrative Office of the U.S. Courts, said the denial of service attack affected an unknown number of courts around the country.
The courts posted an online advisory saying the system was experiencing network connectivity issues and adding that users may have trouble connecting to various court sites.
The advisory said that engineers are investigating the problem and working to restore full functionality as soon as possible and apologizing for any inconvenience.
Redmond said court employees noticed the problem late Friday afternoon.