Turkey's foreign ministry says the country protests "in the harshest way" a U.S. court decision to indict 19 people, including 15 Turkish security officials.

The statement published late Wednesday follows Tuesday's grand jury decision in Washington to charge the defendants with attacking peaceful demonstrators during a visit by Turkish President Recep Tayyip Erdogan on May 16.

Turkey has repeatedly told U.S. officials that security outside the ambassador's home was negligent and didn't ensure the safety of Erdogan's entourage amid sympathizers of an outlawed Kurdish militant group, according to the statement.

The ministry called the indictment "biased" and "regretful," claiming it also accused people who had never been to the U.S.

It announced Turkey would follow legal paths to fight the decision.