Credit Stephen Crowley/The New York Times
The letter, which was sent on Friday and released on Monday morning by Mr. Schneiderman’s office, said that its charities bureau had determined that the Donald J. Trump Foundation had been fund-raising in New York this year when it was not registered to do so under state law.
“The Trump Foundation must immediately cease soliciting contributions or engaging in any other fund-raising activities in New York,” wrote James Sheehan, the chief of the charities bureau.
The foundation’s compliance with the rules that govern nonprofit groups has also been a concern. The New York Times reported last month that Mr. Trump’s foundation does not show up on the charity registers in many states and The Washington Post subsequently reported that the foundation did not have the certification necessary to solicit money in New York.
Document: Letter to Trump Foundation From New York Attorney General’s Office
“While we remain very concerned about the political motives behind A.G. Schneiderman’s investigation, the Trump Foundation nevertheless intends to cooperate fully with the investigation,” Hope Hicks, Mr. Trump’s spokeswoman, said in a statement on Monday. “Because this is an ongoing legal matter, the Trump Foundation will not comment further at this time.”
Mr. Trump has previously deflected criticism about his charitable giving, saying he makes contributions personally and that he has been supportive of his foundation.
Mr. Schneiderman’s office is investigating Mr. Trump’s foundation to determine if it is in compliance with state laws, including how it spends its money.
In the letter, his office provided notice to Mr. Trump’s foundation that within 15 days it must provide certain documents required to be filed by organizations that solicit contributions, including audited financial statements and annual financial reports. It also must file any “delinquent reports” for past years within that time frame.
“The failure immediately to discontinue solicitation and to file information and reports” with the charities bureau, Mr. Sheehan said, “shall be deemed a fraud upon the people of the state of New York.”
Mr. Schneiderman, a Democrat and a supporter of Mr. Trump’s opponent, Hillary Clinton, has also asserted in a separate pending case that Mr. Trump defrauded students who participated in Trump University, his for-profit educational program.