U.S. government officials picked up conversations between former Trump campaign head Paul Manafort and Russian individuals about the 2016 campaign, CBS News reported Tuesday.

This new information comes just one day after a report revealed that the U.S. government had been wiretapping Manafort during and after the 2016 campaign.

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It’s unclear what information was discussed during those conversations or what ties the Russian individuals had to President Trump or the Russian government.

Manafort has been a central figure in special counsel Robert Mueller’s investigation into Russian interference in the election.