WASHINGTON (AFP) - President Donald Trump's personal lawyer Rudy Giuliani returned to Ukraine on Wednesday (Dec 4), shrugging off the scandal over seeking dirt from Kiev on rival Democrats.

The New York Times said Mr Giuliani had travelled to Budapest on Tuesday and Kiev on Wednesday to speak with former Ukrainian prosecutors who could have information that would support Mr Trump's battle against impeachment.

One America News Network (OANN) also said it had a camera team travelling with Mr Giuliani in Ukraine for an investigation into the impeachment case against Mr Trump.

In a tweet, Mr Giuliani wrote that he was "working on an important project with @OANN", aimed at exposing what he said was information covered up by hearings conducted by Democratic Party impeachment chief Adam Schiff.

According to the New York Times, Mr Giuliani, who is the former mayor of New York, was meeting former Ukrainian prosecutor, Mr Yuriy Lutsenko, a central figure in the impeachment case Democrats are building against Mr Trump.

He was also planning to meet two other former prosecutors, Mr Viktor Shokin and Mr Kostiantyn Kulyk.

Mr Giuliani has approached all three over the past year to aid Mr Trump's effort to find dirt on Democrats, especially former vice-president Joe Biden, who could face the President in next year's election.

Democrats are preparing impeachment charges against Mr Trump on the grounds that he, with Mr Giuliani's assistance, solicited foreign interference in US elections for his personal needs.

Mr Giuliani has sought to demonstrate that Mr Biden and his son Hunter, who previously served on the board of Ukrainian energy company Burisma, had been engaged corruptly in the country.

Mr Giuliani is also reportedly under investigation for his representation of multiple Ukrainian figures, including Dmitry Firtash, a billionaire facing extradition to the United States from Austria on charges of bribery and racketeering.