Paul Manafort, who once headed President Donald Trump's campaign, pleaded guilty Friday to conspiracy charges and has agreed to cooperate with special counsel Robert Mueller's ongoing investigations under a new plea deal.
Manafort's plea deal with Mueller, which dramatically ramps up the legal and political danger already facing Trump, came just three days before Manafort was set to begin jury selection for the second of his two federal criminal trials.
Prosecutors said the deal includes a 17-page cooperation agreement with Mueller.
Mueller is investigating Russia's interference in the 2016 election, and possible collusion by members of Trump's campaign in that effort. Mueller is also looking into whether Trump obstructed justice in an effort to influence the Russia probe.