Donald Trump Jr. struggled to answer questions when pressed about why former Trump Organization CFO Allen Weisselberg departed the family's firm.

"Because some legal issues he got himself into," Trump Jr. said, declining to offer specifics about Weisselberg's guilty plea on tax evasion charges last year.

Previously giving lengthy answers to questions about his background and even smiling with the judge, Trump Jr. appeared tense on the witness stand as he answered questions about Weisselberg.

"The specific event was he was indicted," Trump Jr. said.

He added that when began working for the Trump Organization as an executive vice president in the 2010s, Weisselberg outranked him. Trump Jr. would seek Weisselberg's approval for certain business decisions such as refinancing loans.

"Who is above you in your role as an executive vice president in the Trump Organization?" state attorney Colleen Faherty asked.

"Obviously I would have reported to my father in that period of time … people like Allen Weisselberg would have still been senior to me," Trump Jr. said of that time period.

Trump Jr. said he gained more responsibility in 2016 when his father became president and he was named a trustee of his father's revocable trust. He said that he, Weisselberg and his brother Eric Trump became a kind of triumvirate running the Trump Organization.

"We stopped reporting to my father on decisions involving the business," Trump Jr. said.

That relationship broke down once Weisselberg got himself into "legal issues," Trump Jr. said. He testified that he could not recall the circumstances of Weisselberg's exit, including the multimillion-dollar severance deal that Weisselberg received, which Weisselberg faced questions about during his own testimony earlier this month.

"I have no knowledge of the specifics of how it happened. He is no longer working at the Trump Organization," Trump Jr. said of the former CFO.

"Sounds very exciting, but no," Donald Trump Jr. answered to a state attorney's question about whether he knows about accounting certifications, professional organizations, or accounting standards other than GAAP, which stands for "Generally Accepted Accounting Principles."

"I know nothing about GAAP," Trump Jr. said, adding, "I leave it to my CPAs."

"I'm a real estate broker," Trump Jr. said as he introduced himself on the witness stand. He testified that he began working in the family real estate business "right after 9/11," working on Trump Park Avenue and the former Sun Times building in Chicago.

State attorney Colleen Faherty tried to pressed him on his lack of accounting knowledge, prompting several objections from the defense.

Judge Engoron sustained the objections and admonished Faherty against asking negative questions.

Assistant New York Attorney General Colleen Faherty will start off the direct examination of Donald Trump Jr.

Faherty is familiar with questioning high-stakes witnesses, having led the direct examination of former Trump attorney Michael Cohen last week.

Her quick objections during Cohen's cross-examination led Trump attorney Alina Habba to accuse Faherty of trying to "throw off" her game.

A seven-year veteran of the New York attorney general's office and a former criminal defense attorney, Faherty has been a vocal presence in the courtroom since the start of the trial.

Her willingness to spar with Trump lawyer Chris Kise previously led to some heated exchanges in court, such as a sidebar when Faherty demanded Kise "be more respectful."

"No," Kise responded.

"That was rude," Faherty replied.

Donald Trump Jr. has taken the stand, where he will be the first of the former president's children to testify.

Before taking the stand, Trump Jr. sat while news photographers snapped pictures.

"I should've worn makeup," he quipped.

Deutsche Bank was a serious company in business with Donald Trump to make money, defense attorney Jesus Suarez said during his cross examination of former Deutsche Bank executive Nicholas Haigh.

At the height of its relationship with the Trump Organization the company loaned Trump over $378 million, and failed to commission independent appraisals of Trump's properties, Haigh acknowledged. While the bank listed lower estimates for the value of Trump's assets year after year, it continued to do business with Trump and his company.

"We ... the bank hadn't done all the due diligence one would do in the sense of the opinion of value you see in an appraisal," Haigh said, at one point agreeing with the defense's characterization that the bank's internal value services group conducted "sanity checks'' on the numbers.

The direct examination of Haigh by state attorney Kevin Wallace also left a central question about Deutsche Bank's activity unanswered.

In a letter to the court and in previous arguments, lawyers for the attorney general suggested that Haigh might have turned away Trump's business if he had known that Trump's assets were inflated in value.

"As this Court noted during summary judgment arguments, Mr. Haigh testified during OAG's investigation that he may not have authorized lending to the borrower if he had at that time been aware of the inflated asset values contained in Mr. Trump's SFCs [statements of financial condition]," a lawyer for the attorney general wrote to the court in a letter last week.

Wallace never directly posed the hypothetical to Haigh during his direct examination, leaving the question unresolved.

Court subsequently adjourned for the day, with Suarez telling the court he plans to continue his cross examination of Haigh through Thursday afternoon.