President Donald Trump's former campaign chairman has been ordered into custody after a federal judge revoked his house arrest, citing newly filed obstruction of justice charges.

A Dutch lawyer who lied to federal agents investigating former Trump campaign chairman Paul Manafort has been sentenced to 30 days in prison in the first punishment handed down in the special counsel's Russia investigation.

A former top adviser to President Donald Trump's election campaign has formally pleaded guilty to federal conspiracy and false statements charges in the special counsel's Russia investigation.

Special counsel Robert Mueller as brought new tax charges against ex-Trump campaign chair Paul Manafort and business associate Rick Gates.

President Donald Trump's former campaign chairman Paul Manafort was heavily involved in drafting an article defending his work in Ukraine, new documents show.

This week’s events in Washington raise questions relevant to the security of democracy. 

Latest: Former Donald Trump campaign chairman Paul Manafort and his business associate, Rick Gates, have pleaded not guilty to all charges.

Donald Trump has said he was surprised by an FBI raid on his former campaign chairman's home, calling the move "pretty tough stuff".

FBI agents have served a search warrant at one of the homes of Donald Trump's former campaign chairman Paul Manafort, his spokesman said.

US treasury department agents have obtained information about offshore financial transactions involving President Donald Trump's former campaign chairman as part of a federal anti-corruption probe into his work in Eastern Europe.

Donald Trump's former campaign chairman Paul Manafort secretly worked for a Russian billionaire.