Hillary Clinton must answer under oath a set of written questions in a lawsuit against the State Department over her private emails, a federal judge ruled Friday.

Judicial Watch, a conservative watchdog group, was ordered to serve Clinton with a written interrogatory by Oct. 14, according to court documents. The State Department was ordered to provide any unpublished records related to the personnel files of Huma Abedin, one of Clinton’s top aides, by the end of September.