Citigroup chief economist Willem Buiter's alleged stalker charged Citigroup chief economist Willem Buiter has allegdely been stalked by an ex-lover, a Dutch economist. Picture: Britta Campion Source: News Limited AN economist's obsession with one of the world's foremost number crunchers has boiled over. Citigroup's chief economist Willem Buiter's former lover, Heleen Mees, has been arrested and charged with stalking and harassment. Mees allegedly sent over 1000 emails over a two-year period to Buiter, an advisor and consultant for a number of national governments and private financial enterprises. Some were laced with threats and others were of a sexual nature, the New York Daily News reported. Mees, 44, also from the Netherlands, allegedly sent 63-year-old Buiter pictures of her masturbating and of other naked women. She also sent her pictures of dead birds. What can I do to make it right? Shall I lick your b****s? Mees allegedly wrote in an email. "Shall we adopt a child?" she wrote in another. Many more were of a threatening nature. "Hope your plane falls out of the sky," Mees emailed Buiter, according to papers lodged at Manhattan Criminal Court. Economist's stalker sent lewd emails Source: Supplied Mees also allegedly sent emials to Buiter's wife, Anne, and their children. Buiter sent Mees a cease and desist letter on February 27 yet Mees sent hundreds more harassing emails, the court papers alleged. "Defendant's actions have caused him severe annoyance and alarm, and fear for his physical safety of his wife and children," the criminal complaint stated. Mees, who once founded a female-empowerment organisation Women on Top, was arrested on Monday at 11:45pm in New York. She was arraigned on stalking, harassment and aggravated harassment charges. Bail was set at US5,000. Mees' Legal Aid lawyer, Vaneshka Hyacinthe, said her client "had a long-standing relationship" with Buiter and "the emails go in both directions." Manhattan Criminal Court Judge Robert Mandelbaum ordered Mees to stay away from Buiter and his family. "Do not call them, do not go to their home, school, businesses, place of employment. ... no e-mail, no text messages, instant messages, no phone calls, letters, fax or voice messages," Judge Mandelbaum said, the New York Daily News reported.