The New York Times has reported that both American and Israeli officials have confirmed they conducted a joint attack on Tehran.

Videos in Tehran show smoke rising near the offices where the Iranian Supreme Leader, Ayatollah Ali Khamenei, normally spends most of his time.

Per The New York Times:

The United States and Israel attacked Iran on Saturday, according to American and Israeli officials, as multiple explosions resounded in Tehran.

The attack followed months of rising regional tensions amid threats by President Trump to attack.

Israel Katz, the Israeli defense minister, announced the strike in a statement, adding that the country would be under a state of emergency. The U.S. and Israeli officials spoke on the condition of anonymity to discuss national security matters.

Three massive explosions were heard in central Tehran, according to the semiofficial news agency Fars. The casualties and targets were not immediately clear. In Israel, air-raid sirens blared across the country, warning Israelis to expect potential Iranian retaliation.