A cyber attack has allegedly hit Israeli websites on Saturday, urging residents to stockpile items and "prepare for war," according to the Islamic Revolutionary Guard Corps (IRGC).

       Residents have been advised to stock up on food and water ahead of an imminent attack by Iran on Israel.

       Power outages have also been reported in several Israeli cities, including in Tel Aviv, due to the alleged cyber attack.

       The attack may have been launched by an Iran-backed group called the "Cyber Avengers," according to reports.

       This comes after a barrage of rockets were launched by Hezbollah from Lebanon towards northern Israel on Friday.

       READ MORE: Iran’s deadly hypersonic missile can strike Israel in '400 seconds'

       Israel’s military said Thursday it is prepared to defend the country and strike back if Iran retaliates for a deadly airstrike on the Iranian Consulate in Syria. Tehran holds Israel responsible for the attack earlier this month, which the US military believes Israel carried out. Israel has not commented on it.

       The increased tensions have sparked international concern that Israel’s devastating war against Hamas in Gaza could spill over into the rest of the Middle East.

       Israel has called up additional air defense units and activated other troops in anticipation of an attack by either Iran or the many proxy militant groups it supports in the region.

       The army’s chief spokesman, Rear Adm. Daniel Hagari, told reporters Thursday that an attack from Iranian territory “would be clear proof of Iranian intentions to escalate the Middle East and stop hiding behind the proxies.”

       DON'T MISS:

       Israel's Iron Dome 'overwhelmed' by Hezbollah rockets as Iran unleashes hell [SPOTLIGHT]

       Iran's Israel strike options mapped as Netanyahu sinks deeper into 'quagmire' [EXCLUSIVE]

       Iran and Hezbollah to strike 'every inch of Israel' with missiles [REPORT]

       Hagari said Israel has improved its offensive and defensive capabilities in recent months. “We will know how to act where needed,” he said.

       Hagari added that the head of the US military’s Central Command, Gen. Erik Kurilla, arrived in Israel for a strategic assessment with Israeli military leaders.

       President Joe Biden said this week that the US commitment to Israel’s security remains ironclad.

       Follow our social media accounts here on https://www.facebook.com/ExpressUSNews and @ExpressUSNews