Israel’s Prime Minister Benjamin Netanyahu acted illegally by announcing Thursday that he would involve himself directly in his government’s moves to change the country’s judicial system, Attorney General Gali Baharav-Miara told him in an open letter Friday.

“Last night you publicly announced that you intend to violate the ruling of the Supreme Court and act contrary to the opinion of the legal advisor to the government,” she wrote. That statement, she said, “is illegal and contaminated by a conflict of interest.”