A key Trump Organization executive has surrendered to authorities ahead of expected charges against him and the former US president’s company.

Chief financial officer Allen Weisselberg was seen walking into a Manhattan courthouse with his lawyer, with prosecutors expected to announce the first criminal indictment in a two-year investigation into Donald Trump’s business practices.

They accuse the Trump Organization and Weisselberg of tax crimes related to fringe benefits for employees.

Mr Trump denies any wrongdoing and has called the investigation a “witch hunt” by politically-motivated prosecutors.

Reuters reports the charges relate to allegations that Weisselberg and other executives were compensated with the likes of rent-free accommodation and leased cars, without proper reporting on tax returns.

The investigation into the Trump Organization is being jointly pursued by Manhattan district attorney Cyrus Vance Jr and New York attorney general Letitia James – both of whom are democrats.