Israel and Iran exchanged heavy strikes on Monday in one of the most intense days of the conflict since the Israeli military launched an offensive against the Islamic Republic more than a week ago.

The Israeli military said it carried out wide-ranging attacks on “regime targets” in Tehran, including sites tied to Iran’s internal security apparatus, the Islamic Revolutionary Guard Corps, and the Evin Prison, which holds prominent political dissidents.

Iranian state and semi-official media reported that an electricity feeder station was hit in northern Tehran, leading to localised blackouts. The air strike came shortly after a barrage of Iranian missiles that triggered sirens across Israel for over 30 minutes on Monday morning.

Explosions were heard throughout the country, caused either by direct missile impacts or interceptor defences. Israeli authorities reported damage “near a strategic infrastructure facility” in the south, which disrupted power supply. However, military censorship restricts public disclosure, leaving the full extent of the Iranian strikes unclear.