A federal judge Thursday approved a $338,421 invoice from a "special master" for 31 days of work last month reviewing materials seized from President Donald Trump's ex-lawyer, Michael Cohen.

Barbara Jones, a former federal judge, is charging $700 an hour to screen the thousands of files taken in federal raids from Cohen for potential withholding from prosecutors because of attorney-client privilege protection.

Jones' prior invoice for work done from April 24 to 30, had totaled $47,390. As with that bill, Jones' most recent set of charges submitted to Judge Kimba Wood was not contested by federal prosecutors or Cohen, as well as by the president or the Trump Organization. Wood approved payment of the invoice from Jones.

Trump and his company have intervened in the case, claiming that many of the documents could relate to them.