Some people in the capital said the blasts on Wednesday morning were among the most powerful they had felt in more than a month of war.
Iran’s foreign minister, Abbas Araghchi, said on Tuesday that Israel was “openly and unashamedly bombing pharmaceutical companies.”
Defense Secretary Pete Hegseth and Gen. Dan Caine, the chairman of the Joint Chiefs of Staff, took questions from reporters for the first time in nearly two weeks.
Iran maintained that no negotiations have been held with the United States, and said none would while the fighting continues.
Diplomats from around the region met in Pakistan, and the U.S.-Israeli bombardment hit a southern Iranian port, killing at least five people, Iranian state media said.
Ships with no ties to Israel or the United States would be allowed to pass, the government said, but it was unclear if any vessels would try.
The U.S. was said to have sent Iran a peace plan via Pakistan on a day that the Iranians fired a torrent of missiles across the region.
The decision by Lebanon’s foreign ministry has heightened fears of internal instability. Hezbollah, the Iranian-backed militant group and political party, was quick to condemn the move.
The current restrictions on the internet in Iran are coinciding with Nowruz, the observance of the Persian New Year.
Some died in Iran, others on a sea far from home. They were honored together Wednesday at a procession in Tehran.