The Israeli military said on Tuesday that missiles had been launched from Iran towards Israel, and that its home front command had provided life-saving guidelines to people in various parts of the country.
Earlier, the military had announced that any ballistic missile strike from Iran was expected to be widespread and told the public to shelter in safe rooms in the event of an attack.
The Israeli army also said Israel's airspace was closed following the Iranian attack.
The firing of missiles came after Israeli troops launched ground raids into Lebanon, in the biggest escalation of regional warfare since fighting erupted in Gaza a year ago.
Iran has vowed to retaliate following attacks that killed the top leadership of its Hezbollah allies in Lebanon.
Iran's Revolutionary Guards said the country had launched tens of missiles at Israel, and that if Israel retaliated, Tehran's response would be more crushing.
In Washington, President Joe Biden said the United States was prepared to help Israel defend itself.
Meanwhile, four people were killed and seven wounded in a shooting attack in the Jaffa neighbourhood of Tel Aviv on Tuesday. Israeli police said the two shooters had been "neutralised" and the situation was under control.
A suspected gas explosion at a department store in the central Taiwanese city of Taichung killed at least four people and injured 24 others on Thursday, the fire department said.
US President Donald Trump said Russian President Vladimir Putin and Ukrainian President Volodymyr Zelenskyy expressed a desire for peace in separate phone calls with him on Wednesday, and Trump ordered top US officials to begin talks on ending the war in Ukraine.
Israel's military has called up reservists in preparation for a possible resumption of fighting in Gaza if Hamas fails to meet a Saturday deadline to release more Israeli hostages and a nearly month-old ceasefire breaks down.
Israeli Prime Minister Benjamin Netanyahu said the ceasefire in Gaza would end and the military would resume fighting Hamas until it was defeated if the Palestinian group did not release hostages by midday Saturday.
Officials from Bangladesh's former government and security apparatus systematically committed serious human rights violations against protesters staging mass demonstrations last summer, the UN human rights chief said on Wednesday.