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

Senate Majority Leader Chuck Schumer said that during a Sunday call between President Joe Biden and congressional leaders there was "consensus" that Congress needs to act quickly to send aid to both Israel and Ukraine.

Schumer said at a news conference in New York that "hopefully" something can be accomplished this coming week to aid both countries.

Earlier Sunday, Biden spoke to Senate Majority Leader Schumer, House Speaker Mike Johnson, House Minority Leader Hakeem Jeffries and Senate Minority Leader Mitch McConnell.

Schumer said the best way to send aid to Israel and Ukraine is for the House to take up and pass the Senate-approved national security supplemental that includes aid to both countries. The Senate passed the $95 billion package in February, but Johnson has not brought it to the floor for a vote.

"The best way to help Israel rebuild its anti-missile and anti-drone capacity is by passing that supplemental immediately. As I said, Israel expended about over a billion dollars in defending itself and the security supplemental would replenish the kind of anti-missile and anti-drone defenses that are in the Arrow, in the David's Sling, and in the Iron Dome," Schumer said.

House Majority Leader Steve Scalise said in a statement Saturday that the House would change its legislative schedule this week to "consider legislation that supports our ally Israel and holds Iran and its terrorist proxies accountable," but it's not yet clear what legislation that will be, or how drastically it might depart from the Senate-passed bill.

-ABC News' Allison Pecorin and Rachel Scott