About a dozen University of California students were arrested at UC Irvine last night after they disrupted a speech by Michael B. Oren, the Israeli ambassador to the United States.

Oren, who is on a speaking tour of West Coast campuses, was interrupted by protesters ten times over the course of his speech, and at one point left the podium for twenty minutes.

A post at the Irvine activist blog Occupy UCI said that twelve students were arrested, and that all were enrolled at UC Irvine, while an Associated Press article put the number at eleven — nine Irvine students and two from UC Riverside. All of the arrested students were cited and released at the scene.

Another Israeli official, Daniel Taub of the Ministry of Foreign Affairs, is scheduled to speak at Irvine at noon tomorrow, in an event billed as a discussion of “Counterterrorism and Humanitarian Law.”