Iran has reportedly transferred all inmates from the notoriously brutal Evin prison, housing thousands of common criminals, political detainees and an unknown number of foreign and dual nationals, after Israel struck the facility on Monday, according to Iranian media.

Iran's judiciary said on Tuesday that an unspecified number of people, including prison staff and visitors, were wounded and that some others had died in the attack. "In this incident, we also had martyrs," Judiciary spokesperson Asghar Jahangir said, without providing any figures.

Iran’s Prisons Organization said it had moved inmates to two unnamed prisons in Tehran province and that inmates had contacted their families to inform them of their new whereabouts, the Mehr News Agency reported. The operation began as Israel accused Iran of breaching a ceasefire announced by President Donald Trump on Monday night. Trump said the war would “end” 24 hours after the truce.

The Israeli military said Iran had fired two ballistic missiles targeting Israel after the ceasefire came into effect. Defense Minister Israel Katz said he had instructed the country's forces to “respond forcefully.” Iran denies having violated the ceasefire agreement.