Washington: President Donald Trump lashed out at "sleazy New York Democrats" on Thursday after the state's attorney general sued him, three of his children and his foundation, saying he used the charity as his "personal checkbook."

Trump vowed that he would never settle the case, brought by current Attorney General Barbara Underwood. The president took to Twitter on Thursday to blame the action on "disciples" of former Attorney General Eric Schneiderman, who resigned in May after four women in a magazine article accused him of physical abuse.

"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!" Trump wrote on Twitter.

Underwood charged in the lawsuit that the Trump Foundation engaged in "extensive unlawful political coordination" with Trump's 2016 presidential campaign. The case, filed in the state Supreme Court in Manhattan, followed a 21-month investigation that began on Schneiderman's watch.