Israel-Gaza live updates: Israeli officials on reports of Russian airport protesters

All internet and communications services have been cut off in Gaza following a barrage of strikes, according to the Palestinian Telecommunications Company.

"The intense bombing in the last hour destroyed all remaining international routes linking Gaza to the world," the company said in a statement. "The severe bombing led to the interruption of all communications services in the Gaza Strip."

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Palestinian scholar from Gaza talks about need for cease-fire

Palestinian Jehad Abusalim speaks about the impact of the deadly conflict in Gaza.

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Jawal, a Palestinian mobile company, also said all communications and internet services have been interrupted due to the "intense bombing."

Palestinian Red Crescent, a humanitarian organization, said it is unable to reach its teams due to the disruption in landline, cell and internet services.

"We are deeply concerned about the ability of our teams to continue providing their emergency medical services," the group said in a statement.

The World Health Organization said it has also lost touch with its staff in Gaza, with Director-General Tedros Adhanom Ghebreyesus adding, "This siege makes me gravely concerned for their safety and the immediate health risks of vulnerable patients. We urge immediate protection of all civilians and full humanitarian access."

Vice President Kamala Harris and second gentleman Doug Emhoff met with families of Americans who are unaccounted for following the Oct. 7 attack in Israel and heard of their "agonizing" experiences, Harris' office said.

During the meeting at the State Department Friday morning, Harris told the families that "securing the hostages remains front and center in our diplomatic conversations," a readout from her office stated.

She also said they are working with partners in the Middle East "to ensure that any country with influence over Hamas brings that influence to bear to help secure the release of hostages," the readout stated.

Her office did not specify how many families attended the meeting.

The Biden administration said Tuesday that 10 Americans remained accounted for.

Blasts hit two Egyptian Red Sea towns on Friday, injuring at least six people, according to the Egyptian military and state media, with Israel blaming the incidents on an "aerial threat" in the region.

Egyptian army spokesman Col. Gharib Abdel-Hafez said an "unidentified drone" crashed Friday morning into a building near a hospital in the resort town of Taba, near the border with Israel, injuring six people.

Earlier on Friday, Egyptian state-linked TV channel Al-Qahera News said a missile fired as part of the escalation in the neighboring Gaza Strip had struck a medical facility in Taba.

The channel later reported that an "unidentified body" crashed near a power station in the South Sinai resort town of Nuweiba, some 45 miles to the south.

The Israeli military said the incidents were a result of an "aerial threat" in the Red Sea region and that there were no Israeli casualties from the strike near its border.

"An aerial threat was detected in the Red Sea region, and fighterjets were called in to deal with it," the Israeli military’s Arabic spokesman Avichay Adraee said in a statement. "We estimate that the harm to Egypt was caused by this threat," he said, adding that Israel will work with Egypt and the United States to "tighten defense in the region" against such threats.

Egyptian witnesses said fighter jets have roared above the two towns since dawn.

There was no immediate claim of responsibility for the two incidents.

Earlier this week, a number of Egyptian border guards were injured after being hit by fragments of a shell that Israel’s army said was accidentally fired from one of its tanks. The Israel Defense Forces quickly apologized for the incident.

The recent incidents highlight the risk Egypt faces from a possible regional spillover of the conflict between Israel and Hamas, the militant group that rules Gaza.

-ABC News' Ayat Al-Tawy

At least four people were injured on Friday when a rocket struck an apartment building in Tel Aviv, according to Israeli authorities.

Hamas allegedly fired a barrage of rockets from the Gaza Strip toward Tel Aviv on Friday afternoon and most were intercepted by Israel’s air defense system, but one hit a five-story apartment building.

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Rocket hits Tel Aviv apartment building

ABC News correspondent Matt Rivers has the latest on the rocket attack in Tel Aviv and the situation at the Lebanese border.

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The injured victims ranged in age from 20 to 78. Two were hospitalised in moderate condition while the others were in minor condition, according to Israel's rescue service MDA.

-ABC News' Dani Tene and Morgan Winsor