A federal judge in Washington, D.C., on Friday extended a grand jury for six months as part of special counsel Robert Mueller's investigation.

A federal judge delayed the sentencing of former national security adviser Michael Flynn on Tuesday after chastising him for betraying his country.

On the eve of Michael Flynn's sentencing, special counsel Robert Mueller released a memo of FBI agents describing an FBI interview in which he lied.

Two business partners of former U.S. national security adviser Michael Flynn were indicted Monday on illegal lobbying charges.

Rudy Giuliani called President Donald Trump's ex-attorney Michael Cohen a "serial liar," regarding his testimony that Trump directed him to arrange hush payments.

Special counsel Robert Mueller's Russia election meddling probe has cost more than $25 million since it began in the spring of 2017.

Special counsel Robert Mueller on Friday asked a federal judge to dismiss any arguments made by President Donald Trump's former national security advisor Michael Flynn leading into his sentencing next week.

Here's a rundown of the major players in the investigation into Russian attempts to interfere in the U.S. presidential election and how are they connected.

Michael Flynn, the former national security adviser for President Donald Trump, has asked a federal judge for no prison time for lying to the FBI.

Former FBI Director James Comey will testify Friday before House lawmakers regarding the bureau's Hillary Clinton email investigation and the ongoing Russia inquiry.

Special counsel Robert Mueller recommended that President Donald Trump's former national security adviser, Michael Flynn, not receive any jail time.

Donald Trump is in the midst of a political firestorm over the conviction of ex-campaign chairman Paul Manafort and the guilty plea of ex-lawyer Michael Cohen.

Investigative reporter Brian Ross departed from ABC News on Monday after being suspended in December.

Special counsel Robert Mueller's investigation into Russian interference in the 2016 presidential election has cost nearly $17 million in its first year.

Copies of memos written by former FBI Director James Comey describe how the president asked for Comey's loyalty and to end a Russia investigation.