The White House has launched an internal probe into the use of private email by senior aides after a report that senior adviser Jared Kushner used a private email account for official business, Politico reported Thursday.

The effort, which reportedly began earlier this week, involves pulling batches of emails on the White House server to and from various private accounts.

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The probe could go on for several weeks or even months, according to the report.

Politico reported that the White House counsel's office is going over the accounts to decide whether they are relevant to any probes involving the administration, including the ongoing investigation into ties between Trump campaign associates and Russia.

The Hill has reached out to the White House for comment.

News of the investigation comes days after the newspaper reported that Kushner had communicated with other administration officials using a private email address that was set up in December.

The Senate Intelligence Committee, which interviewed Kushner behind closed doors, requested on Thursday that Kushner go through his personal email account for any information pertaining to Russia.

During the 2016 election, the Trump campaign frequently targeted former Democratic nominee Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE for her use of a private email server while serving as secretary of State.