Eight Israeli Defense Forces soldiers were killed in an "incident" in southern Gaza, according to the IDF.

Earlier Saturday, Hamas released a statement saying an operation targeting Israeli military vehicles in Rafah killed several IDF soldiers. The IDF has not commented on the nature of the soldiers' deaths.

-ABC News' Nasser Atta and Yael Benaya

Andrey Kozlov, one of the four Israeli hostages rescued from Gaza on Saturday, is urging Israelis to gather Saturday at "Hostage Square" in Tel Aviv in support of the hostages and their families.

"I'm already in Israel at home. But a lot of hostages are still there in Gaza," Kozlov, 27, said in a video message. "I saw a lot of rallies on Saturday, and it gave me a lot of hope."

Kozlov’s girlfriend told ABC News this week that Kozlov was psychologically tortured while in captivity, and she said that he told her the moment he realized the Israeli soldiers were there to save him, he felt he was reborn.

The situation on Israel’s northern border with Lebanon remains tense.

Two women were killed and 20 people were injured in the village of Janata in southern Lebanon after an airstrike on a house late Thursday night, the Lebanese Civil Defense said in a statement.

Since Friday morning, at least 50 projectiles were launched from Lebanon toward Israel, the Israeli Defense Forces said.

"A number of the projectiles were intercepted," the IDF said.

"As a result of the launches, a fire broke out in the area of Kfar Szold," the IDF added.

Hezbollah issued statements taking responsibility for nine attacks on Israeli sites Friday.

-ABC News’ Ellie Kaufman, Nasser Atta and Jordana Miller

Israeli forces returned to Jenin, in the West Bank, on Thursday to conduct what they called a "13-hour counter-terror operation" that left three killed, two detained and multiple injured, according to the local Palestinian Red Crescent Society.

The youngest person killed was 19 and the oldest 70, according to the PRCS report.

Bulldozers were filmed in central Jenin, where UNRWA said there was heavy damage, as well as in the town of Qabatiya, south of Jenin, where the Israeli forces say they conducted a "pressure cooker" procedure on a house where they say two senior terrorists were staying.

Two suspects were killed, according to the IDF statement. The PRCS reports three killed and multiple people injured by shrapnel and beating.

The IDF reported two died in the operation.

-ABC News' Camilla Alcini

The four hostages rescued from Gaza this weekend are physically "in less severe condition than we kind of prepared for," said Itai Pessach, head of the medical team at the Sheba Medical Center, where the hostages are being treated.

But the worry is mainly on the long-term psychological impact, as "they underwent continuous, psychological abuse," Pessach told ABC News.

The rescued hostages -- Noa Argamani, 25; Almog Meir Jan, 21; Andrey Kozlov, 27; and Shlomi Ziv, 40 -- were kidnapped by Hamas from the Nova music festival on Oct. 7, according to the Israel Defense Forces. They were all rescued in good condition, the IDF said.

Argamani has been discharged while the three men remain at the hospital. But Argamani will still be receiving medical treatment from the Sheba team for an indefinite period, Pessach said.

"It's a very, very long process of rehabilitation. And we received captives that came back six months ago, and we're just now starting to see the initial post-traumatic response coming up," Pessach said. "They have seen a lot of war-related things that happened and all of that is part of their trauma, and we will need to care for that."

"When you see the eyes and you see, you know, they get silent for a second and you understand that there's a trigger, there's something in their minds, and you see a tear, or they ask to be left alone for a moment or something like that. This is when you really feel, under the surface there’s so much that's waiting for us," Pessach said.

-ABC News' Tom Soufi Burridge, Dana Savir, Omer Manor and Hugo Leenhardt