Israels attorne Prime Minister Benjamin Netanyahu’s wife on suspicion of harassing political opponents and witnesses in the Israeli leader’s corruption trial.

The Israeli Justice Ministry made the announcement in a terse message late Thursday., saying the investigation would focus on the findings of a recent report by the “Uvda” investigative program into Sara Netanyahu.

The program uncovered a trove of WhatsApp messages in which Mrs. Netanyahu appears to instruct a former aid to organize protests against political opponents and to intimidate Hadas Klein, a key witness in the trial.