Iran has arrested over 500 people over alleged ties to Israeli intelligence since the Iran-Israel conflict started less than two weeks ago, according to a human rights organization.

More than 530 people were arrested across Iran since the rapidly escalating conflict began on June 13, the Hengaw Organization for Human Rights detailed in a report released Sunday. Some charges include espionage committed on behalf of the Israeli intelligence agency Mossad, “propaganda against the state” of Iran, and “spreading public anxiety.”