New York’s attorney general on Thursday sued US President Donald Trump and his namesake foundation, saying the non-profit should be dissolved after more than a decade of illegal conduct, including support for Trump’s 2016 US presidential campaign.

Barbara Underwood, the attorney general, accused the Donald J Trump Foundation and its directors of conducting “extensive unlawful political coordination” with the campaign, and “repeated and wilful self-dealing” to benefit Trump’s personal and business interests.

“The Trump Foundation was little more than a checkbook for payments from Mr. Trump or his businesses to non-profits, regardless of their purpose of legality,” Underwood said in a statement. “That is not how private foundations should function.”

Trump reacted on Thursday by attacking “sleazy New York Democrats” after the state’s attorney general sued him and his foundation, and said he would not settle the case.

“The sleazy New York Democrats, and their now disgraced (and run out of town) A.G. Eric Schneiderman, are doing everything they can to sue me on a foundation that took in $18,800,000 and gave out to charity more money than it took in, $19,200,000. I won’t settle this case!”.