(Reuters) -Hackers have leaked internal documents stolen from Leidos Holdings Inc, one of the largest IT services providers to the U.S. government, Bloomberg News reported on Tuesday, citing a person familiar with the matter.

The company recently became aware of the issue and believes the documents were taken during a previously reported breach of a Diligent Corp. system it used, the report said, adding that Leidos is investigating it.

The Virginia-based company, which counts the U.S. Department of Defense as its primary customer, used the Diligent system to host information gathered in internal investigations, the report added, citing a filing from June 2023.

A spokesperson for Diligent said the issue seems to be related to an incident from 2022, affecting its subsidiary Steele Compliance Solutions. The company notified impacted customers and had taken corrective action to contain the incident in November 2022.

Leidos did not respond to a Reuters request for comment on the report.