LIVE UPDATES: State of Emergency Declared Across Israel

The Israeli government announced earlier on Sunday that it had invoked Article 40 of the Basic Law, which means the country officially entered a state of war.

"In accordance with the situational assessment, a closed military zone has been declared in the entire Gaza Division Area of Responsibility. The IDF emphasizes that entry into a closed military zone is prohibited and asks the public to be alert and not to enter the area," the IDF said on Telegram.

The office added that the Israeli cabinet made a series of operational decisions aimed at destroying the military and political capabilities of Hamas and the Islamic Jihad movement. These decisions include the suspension of electricity supply to the Gaza Strip, as well as the delivery of goods and fuel.

Earlier in the day, President of the European Council Charles Michel held phone talks with Shtayyeh and expressed the European Union's readiness to support the relaunch of the political process of the Middle East settlement.

"IDF fighter jets struck two sites containing military infrastructure located in mosques, used by the Hamas terrorist organization in the Gaza Strip for carrying out attacks against Israel ... [Hamas] continues its terrorist activities inside the Gaza Strip, exploits religious sites, and deliberately places its military assets in the heart of the civilian population," the IDF said on Telegram.

"None of those funds will ever be accessed by Iran. They can only be used, and none of them used to date, to pay vetted third-party, non-Iranian vendors for a limited category of humanitarian trade, food, agricultural products, medicine, medical supplies. It's just a totally ridiculous charge and had nothing to do with what happened today," the US official said on Saturday.

"I would say that that level of detail was not specifically discussed on the president's call," the US official said on Saturday.

The newspaper reported on Saturday that the death toll stood at 250 people, and the number of wounded people stood at 1,452.

"IDF fighter jets also struck an operational command center belonging of the rocket system operatives of the Hamas terrorist organization and an operational command post belonging to the Islamic Jihad terrorist organization," the IDF said in on Telegram.

"Amid the unstable military and political situation in the State of Israel, Rosaviatsiya imposes restrictions on night departures from airports of the Russian Federation to airports of the State of Israel until special orders starting 3.00 Moscow time on October 8. Air carriers have been instructed to strictly comply with Federal Aviation Regulations and to provide passengers of delayed flights with all necessary services, as well as to return and exchange tickets without penalties," the statement read.

Among the settlements returned under control are the settlements of Sderot, Nirim, and about 12 others, the newspaper added.

Blinken also reaffirmed the United States' solidarity with the government and people of Israel, the statement read.

Earlier reports indicated that at least 200 people were killed and over 1,000 people were injured as a result of the escalation.

The US government officials have also been instructed to remain in constant contact with leaders throughout the region, including Egypt, Turkiye, Qatar, Saudi Arabia, Jordan, Oman, the United Arab Emirates, as well as European partners and the Palestinian Authority, Biden said, adding that he would personally remain in close contact with Israeli Prime Minister Benjamin Netanyahu as this situation continues to unfold.