Among multiple cases against the former US President, Donald Trump trial began in New York, Trump attacked New York's attorney general and the judge overseeing his civil fraud trial.

A state lawyer accused Trump of generating more than $100 million by lying about his real estate empire.

Attorney General Letitia James is seeking at least $250 million in fines, a permanent ban against Trump and his sons Donald Jr and Eric from running businesses in New York, and a five-year commercial real estate ban against Trump and the Trump Organization, Reuters reported.

Testimony in the Manhattan courtroom began following opening statements, with Donald Bender, a partner at Mazars USA and longtime accountant for Trump's businesses, as the state's first witness.

Speaking to media persons, Trump said that the case was a “scam", a “sham", and a “political vendetta" by James, and during a lunch break called the Democrat "a corrupt person, a terrible person. Driving people out of New York."

He was equally unsparing of the judge, Arthur Engoron, calling him a partisan Democrat who is using the case to interfere with the 2024 presidential election, where Trump holds a big lead for the Republican nomination.

“This is a judge that should be disbarred. This is a judge that should be out of office," said Trump whose election campaign used the start of the trial for fundraising, as per Reuters reports.

The case concerns accusations by the attorney general that Trump inflated his assets and his own net worth from 2011 to 2021 to obtain favorable bank loans and lower insurance premiums.

James has accused Trump of materially overvaluing assets including his Trump Tower penthouse apartment in Manhattan, his Mar-a-Lago estate in Florida, and various office towers and golf clubs, and inflated his own fortune by as much as $2.2 billion.