Oct. 28 (UPI) -- A federal grand jury approved charges linked to special counsel Robert Mueller's probe which, among other aims, seeks to determine whether Russia meddled in the 2016 U.S. election, unnamed sources briefed on the subject said.
CNN was the first to report the indictment Friday, citing unnamed sources. A federal judge ordered the document sealed so it's unclear who faces charges and what the charges are.
Sources told The Wall Street Journal the subject of the indictment could be arrested on Monday.
Deputy Attorney General Rod Rosenstein tapped Mueller to lead the Department of Justice's investigation into alleged Russian interference after Attorney General Jeff Sessions recused himself from the probe.
Mueller's team has interviewed a number of people linked to President Donald Trump's campaign and administration. Earlier this month, investigators spoke with former White House press secretary Sean Spicer as well as National Security Council chief of staff Keith Kellogg and former White House chief of staff Reince Priebus.
The team also has shown interest in foreign lobbying conducted by former Trump campaign chairman Paul Manafort. Mueller issued subpoenas for documents and interviews with people linked to Manafort.
Mueller has said he's interested in also speaking to communications director Hope Hicks, White House counsel Don McGahn, communications adviser Josh Raffel and associate counsel James Burnham.