Two U.S. jets and two helicopters were hit by Iranian fire on Friday.
President Donald Trump announced "major combat operations" against Iran on Feb. 28, with massive joint U.S.-Israeli strikes attack targeting military and government sites, officials said.
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An American fighter jet appears to have been shot down by Iran, according to a U.S. official. Search and rescue operations are currently underway, the official said.
Israel and the United States will "continue to crush" Iran, Israeli Prime Minister Benjamin Netanyahu said Friday during remarks at a military facility in Tel Aviv.
"Together with our American friends, we continue to crush the terrorist regime in Iran. We are eliminating commanders, bombing bridges, bombing infrastructure," Netanyahu said.
"In full coordination between me and President [Donald]Trump, between the IDF and the United States military, we will continue to crush Iran. This regime is weaker than ever - Israel is stronger than ever," Netanyahu added.
At least eight civilians were killed and 95 others were injured in the U.S.-Israeli attack on the B1 bridge between Karaj and Tehran on Thursday, according to Iran's semiofficial Fars News Agency, which is affiliated with the Islamic Revolutionary Guard Corps.
ABC News can not independently confirm the deaths.
President Donald Trump said that Iran is "eager" to make a deal and revealed that the U.S. "blew up their three big bridges last night," in an interview with TIME Magazine Thursday.
"Why wouldn't they call? We just blew up their three big bridges last night," the President said. "They're getting decimated. They say Trump is not negotiating with Iran. I mean, it's sort of an easy negotiation."
When pressed about whether Israel would stop when the U.S. stops the war, Trump said that they will "stop when [he stops]," but added that they would stop unless "they're provoked."
"They'll do what I tell them. They've been a good team player. They'll stop when I stop. They'll stop unless they're provoked, in which case, they'll have no choice, but they'll stop when I stop," Trump said about the Israelis, according to Time.
