An Israeli court convicted a 19-year-old man on Thursday in connection with threats made against organizations and individuals around the world, including the Israeli Embassy in Washington and numerous Jewish groups in the United States.

The youth court withheld the man’s name because some of the crimes were committed before he was an adult, but the Justice Department identified him, in charging documents last year and indictments this year, as Michael Ron David Kadar, a dual American and Israeli citizen.

In the verdict, Judge Zvi Gurfinkel of the Tel Aviv district youth court said that the man had threatened thousands of people between 2015 and early 2017 “with acts of terror and murder that would be executed in an area filled with people, and that these acts would be executed by explosion or shooting and would harm many.”

The targets included “airlines, airports, schools, malls, police stations, hospitals” and other institutions, he said.