Israel-Gaza-Lebanon updates: Iranian president responds to Israel's retaliation

Missile and drone storage facilities, weapon production sites and air defense systems were among the targets of the Israeli strikes, according to an official Israeli source with knowledge of the operation.

Military bases were targeted in the Israeli strikes, Iran state TV said.

"The initial investigations and follow-ups of Fars journalists show that several military bases in the west and southwest of Tehran were the targets" of Israel's attack, the Fars News Agency said.

Tehran refinery is active and the area around it is calm, the semi-official Mehr News Agency reported.

Iranian authorities have yet to comment on the strikes.

-ABC News' Somayeh Malekian

A sound heard around Tehran was related to air defense, the Public Relations of Tehran Province Air Defense said.

Iran state TV reported that six explosions were heard around Tehran at about 2:10 a.m. local time.

Israel's attack on Iran is ongoing and is expected to be a one-night affair, according to a source with direct knowledge.

No Israeli casualties and no damage to Israeli warplanes have been reported so far, the source said.

The United States is not participating in the Israeli military operation in Iran, according to a senior administration official.

Defense officials also confirm that the U.S. has no involvement in the Israeli strikes.

The U.S. was notified by Israel ahead of the attack, defense and Israeli officials said.

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US not involved in Israeli operation against Iran, officials say

President Joe Biden has been briefed and is closely following the developments of the retaliatory strike, according to a White House official.

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