U.S. Democratic presidential candidate Hillary Clinton address the crowd while visiting  La Escuelita School in Oakland, California, U.S., May 6, 2016. REUTERS/Stephen LamThomson ReutersU.S. Democratic presidential candidate Hillary Clinton visits La Escuelita School in Oakland, California

The State Department says in a new court filing that it can find no emails to or from a former Hillary Clinton aide who worked for the agency and also managed Clinton’s private computer server during her stint as secretary of state.

The revelation was in a filing Monday by government lawyers for the department in a response to a lawsuit by the Republican National Committee. The GOP group had sued over its public records request for all work-relatedemails sent to or received by Clinton’s former aide, Bryan Pagliano, between 2009 and 2013, covering most of Clinton’s tenure.

Pagliano was offered immunity by the Justice Department in its continuing investigation into Clinton’s server andemails and whether they violated national security laws.