Special counsel Robert Mueller has reportedly collected sufficient evidence to charge USA president Donald Trump's former national security advisor and his son in the investigation into alleged collusion between Trump aides and Russian Federation.
Mr Mueller's team are also said to be looking at whether the former National Security Adviser attempted to have Fethullah Gullen, an elderly Muslim cleric, extradited from the USA to Turkey in exchange for millions of dollars.
A team of federal investigators led by Special Counsel Robert Mueller have gathered sufficient evidence to charge Michael T. Flynn and his son Michael G. Flynn as part of the probe into alleged collusion between Trump aides and Russian actors, NBC News reported on Sunday.
Mr Flynn served for 24 days as Mr Trump's national security adviser but was sacked after it was discovered he had misrepresented his contacts with Sergey Kislyak, then the Russian ambassador to Washington, in a conversation with Vice President Michael Pence.
FBI investigators are reported to have arranged interviews with multiple witnesses in the coming days with the aim of gathering further evidence against Mr Flynn.
If Flynn is charged, he would be the first individual to have worked for the Trump presidency accused of wrongdoing. Sanders had also said President Donald Trump "has confidence they're going to close this up soon".
And having Flynn's son over a barrel could get him there.
Flynn's son appeared to comment on the NBC report shortly after it was published.
Flynn also was revealed to have failed to register with the Justice Department as a foreign agent for work he did during the campaign for Turkey - a felony offense. Flynn's son had reportedly worked closely with his father at his lobbying firm, the Flynn Intel Group. They are former campaign manager Paul Manafort, and former campaign aides Rick Gates and George Papadopoulos.