Suspected attacks by Yemen's Houthi rebels targeted two ships in the Red Sea on Monday, authorities said, near where crews hope to salvage a tanker loaded with oil and still ablaze after another assault by the group.

The attacks are believed to be the latest in the Iranian-backed rebels' campaign that has disrupted the $1 trillion in goods that pass through the Red Sea each year over the Israel-Hamas war in the Gaza Strip as well as halted some aid shipments to conflict-ravaged Sudan and Yemen.

A rare call for a general strike in Israel to protest the failure to return hostages held in Gaza led to closures and other disruptions around the country on Monday, including at its main international airport. But it was ignored in some areas, reflecting deep political divisions.

Tens of thousands of Israelis had poured into the streets late Sunday in grief and anger after six hostages were found dead in Gaza. The families and much of the public blamed Prime Minister Benjamin Netanyahu, saying they could have been returned alive in a deal with Hamas to end the nearly 11-month-old war.

Israeli police said three people killed in Sunday's shooting attack in the occupied West Bank were members of the police force.

"Three members of the police force were killed this morning in a shooting attack," Ouzi Levy, chief of the Israeli police in the West Bank, told reporters at the scene of the attack near the Tarqumiya checkpoint near the city of Hebron.

Palestinian health authorities and United Nations agencies on Sunday began a large-scale campaign of vaccinations against polio in the Gaza Strip, hoping to prevent an outbreak in the territory that has been ravaged by the ongoing Israel-Hamas war.

Authorities plan to vaccinate children in central Gaza until Wednesday before moving on to the more devastated northern and southern parts of the strip. The campaign began with a small number of vaccinations on Saturday and aims to reach about 640,000 children.

Israel on Sunday said it had recovered the bodies of six captives in Gaza, including a young Israeli-American man who became one of the most well-known captives held by Hamas as his parents met with world leaders and pressed for his release, including at the Democratic convention last month.

The Israeli military said Friday it had wrapped up a month-long operation in southern and central Gaza that it said killed more than 250 Palestinian fighters.

An Egyptian worker was killed Friday in a hotel fight that wounded three Arab-Israeli tourists and other workers in the Egyptian seaside town of Taba, a medical source told AFP.

The worker succumbed to his injuries "in an ambulance transporting him from Taba" on the border with Israel to Sharm al-Sheikh, 200 kilometers south, the source said, requesting anonymity because they were not authorized to speak to the media.

Two Palestinians were killed and three Israeli soldiers were wounded in two attempted car bombings and related clashes overnight in the occupied West Bank.

The Israeli army said the two Palestinians were killed while preparing to carry out bombings in the West Bank, where an Israeli operation entered a fourth day.

The UK on Friday said it was deeply concerned by the Israeli military's ongoing operation in the occupied West Bank, urging it to "exercise restraint" and "adhere to international law".

"We recognize Israel's need to defend itself against security threats, but we are deeply worried by the methods Israel has employed and by reports of civilian casualties and the destruction of civilian infrastructure," a Foreign Office spokesperson said.

An Israeli missile hit a convoy carrying medical supplies and fuel to an Emirati hospital in the Gaza Strip, killing several people from a local transportation company, the American Near East Refugee Aid group said Friday. Israel claimed without immediate evidence that it opened fire after gunmen seized the convoy.

The strike killed several people employed by a transportation company that the aid group was using to bring supplies to the Emirates Red Crescent Hospital in Rafah, said Sandra Rasheed, Anera's director for the Palestinian territories.