Ramon Rivera, 53, has been charged in the murder of three innocent bystanders in a stabbing spree across New York City on Monday.

But the Washington Examiner can report that Rivera’s attacks only ended when State Department Diplomatic Security Service agents detained him near the headquarters of the United Nations. While the New York Police Department has claimed sole responsibility for catching Rivera, it was the DSS agents assigned to a protective detail for United Kingdom Foreign Secretary David Lammy who stopped Rivera and held him until NYPD officers arrived. The agents also provided emergency aid to a 36-year-old victim of the attacker, who later died in the hospital.