The Pentagon is holding a press briefing regarding the leak of classified documents related to military intelligence, as the Biden administration continues to search for the parties responsible.

The briefing comes after President Joe Biden told reporters that investigators were close to determining who leaked the documents, and reports released on Thursday indicate that investigators have identified the leaker.

BIDEN SAYS ADMINISTRATION IS CLOSE TO FINDING LEAKER OF CLASSIFIED DOCUMENTS

The documents were reportedly leaked sometime in February in an invite-only chat on Discord, a chat server, according to a Washington Post report. However, Secretary of Defense Lloyd Austin said he was made aware of the leaked documents on April 6 and convened military officials for daily updates since April 7.

A number of the Pentagon documents suggested that U.S. intelligence penetrated the highest levels of the Russian military, including information from the Russian Defense Ministry outlining attacks against two separate Ukrainian troop positions.

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The Washington Post report indicated that the man who leaked the documents, known as "OG," allegedly worked on a military base and brought home top secret documents. The group he shared the documents with was reportedly about 25 members, invite-only, and made up of both U.S. citizens and foreigners, created during the COVID-19 pandemic.

The briefing is set to begin at 2 p.m. on Thursday.