The Israel Defense Forces announced changes to the "Home Front Command's defensive guidelines" as of 11 p.m. Israel time Saturday ahead of an anticipated Iranian attack that could be imminent.

As part of the changes, schools and educational institutions will remain closed across Israel, "prohibiting educational activities," -- not only because the Passover vacation is starting. Gatherings will be limited to 1,000 people in green areas.

-ABC News' Edward Szekeres

In a statement in response to Iran's seizure of a cargo ship it said was Israeli, Israeli Foreign Minister Israel Katz claimed it was a Portuguese civilian cargo ship, belonging to an EU member.

Katz called Iran's seizing of the cargo ship "a pirate operation in violation of international law". He also called Iran's "Ayatollah regime" a "criminal regime".

"The Ayatollah regime of @khameneiir is a criminal regime that supports Hamas' crimes and is now conducting a pirate operation in violation of international law. I call on the European Union and the free world to immediately declare the Iranian Revolutionary Guards corps as a terrorist organization and to sanction Iran now," Katz said in a statement.

-ABC News' Dana Savir

A Palestinian man has been killed in the occupied West Bank and 25 are reported hurt after dozens of Jewish settlers stormed a village during an Israeli search for a missing teenager. Israeli troops intervened after dozens of settlers stormed al-Mughayyir armed with guns and stones.

It is not yet clear whether the man who died, Jehad Abu Alia, 26, was shot by an armed settler or Israeli soldier. The Palestinian Red Crescent said live fire hit at least eight people.

The missing boy, identified as Benjamin Ahimeir, 14, was found dead. He had gone missing Friday morning before Israeli officials say he was killed in a "terror attack."

"Security forces are continuing the pursuit after those suspected of carrying out the attack," the Israel Defense Forces said Saturday.

-ABC News' Edward Szekeres

In a report posted on X, the Iranian Tasnim state news agency affiliated with the Islamic Revolutionary Guard Corps (IGRC) said paramilitary Revolutionary Guard commandos seized a cargo ship near the Strait of Hormuz.

The detained ship, named "MSC Aries," operates under the flag of Portugal and is connected to the London-based company called Zodiac Maritime which is partially owned by Israeli billionaire Eyal Ofer.

“MSC is the manager and commercial operator of the container vessel MSC Aries. MSC is responsible for all vessel activities including cargo operations and maintenance," Zodiac Maritime said in a statement to ABC News on Saturday. "Title to the vessel is held by Gortal Shipping Inc. as financier and she has been leased to MSC on a long term basis. Gortal Shipping Inc. is affiliated with Zodiac Maritime. MSC is also responsible for the vessel’s itinerary, schedule and crew onboard and any queries about the vessel should be directed to MSC”.

Further details regarding the seized vessel are expected to be released shortly.

"We regret to confirm that MSC Aries owned by Zodiac Maritime and chartered to MSC has been boarded by Iranian authorities via helicopter as she passed the Strait of Hormuz," MSC said in a statement. "She has since been diverted from her itinerary towards Iran. She has 25 crew onboard, and we are working closely with the relevant authorities to ensure their wellbeing, and safe return of the vessel."

- ABC News' Dana Savir

United States Secretary of State Antony Blinken has denied any U.S. involvement in Israel's retaliatory strike on Iran.

Blinken was asked at a press conference early Friday morning if Israel told the United States in advance of the strikes in Iran.

"I’m not going to respond," Blinken said. He went on to say that "the U.S. was not involved in any Israel offensive.”