The commander of U.S. Central Command was presented with Israel Defense Forces (IDF) "operational plans for Lebanon" during his weekend visit, the IDF said.

Gen. Michael Kurilla met with the Chief of Israel's General Staff Lt. Gen. Herzi Halevi for a "situational assessment" and visited the Northern Command, which is responsible for the frontiers with Lebanon and Syria.

The general's visit had "an emphasis on threats from Lebanon and Iran in the northern arena," the IDF wrote on social media.

Kurilla met with Maj. Gen. Ori Gordin -- Northern Command's commanding officer -- "conducted a situational assessment in the command's underground operations center and received an operational briefing, during which he was presented with the IDF's operational plans for Lebanon," the force said.

Cross border skirmishes between the IDF and Hezbollah -- which is aligned with Iran -- have been near constant since Oct. 8, 2023, the uptick in fighting prompted by Hamas' Oct. 7 attack on southern Israel and the subsequent IDF response.

Israeli leaders have threatened a significant military operation into southern Lebanon unless Hezbollah withdraws its forces north of the Litani River, some 18 miles north of the shared border.

-ABC News' Jordana Miller and David Brennan

The Israel Defense Forces (IDF) reported "a hostile aircraft infiltration" in the north of the country on Monday morning.

"Two suspicious aerial targets were identified crossing from Lebanon into Israeli territory," The IDF said in a statement. "An aerial target fell in the area of Nahariya. No injuries were reported."

The Magen David Adom (MDA) -- Israel's emergency services -- said in a social media post that its personnel "located the site of the impact, as of now no casualties have been found."

Israeli media reported that a drone detonated after crashing into an apartment block.

-ABC News' Dana Savir and David Brennan

The Hostages Families Forum Headquarters organized twin protests in Tel Aviv and New York on Sunday, as pro-cease-fire activists look to build pressure on Prime Minister Benjamin Netanyahu's government and American politicians.

Hundreds of people rallied in Central Park "to mourn six Israeli and American hostages murdered after 11 months in captivity," the Forum said in a press release.

Among the speakers were Gilad and Nitza Korngold -- the parents of hostage Tal Shoham who was abducted into Gaza on Oct. 7.

"The Red Cross has refused to help our loved ones while shamelessly requesting better conditions for the terrorists in Israel's imprisonment," they said, per the Forum's press release. "We ask everyone here to call your representatives and demand the release of our loved ones from captivity."

Moran Stela Yanai -- released in November 2023 after 54 days as a hostage in Gaza -- also spoke, telling attendees: "My brothers and sisters in captivity are hungry and in pain and in constant danger."

"We must find the strength to keep fighting for them and bring them home," she added, as quoted in the Forum's press release.

-ABC News' Jordana Miller and David Brennan

Israeli and Jordanian authorities confirmed the partial reopening of border crossings on Monday following their closure due to the killing of three police officers at the Allenby Bridge.

An Israel Airport Authority spokesperson said the crossings at Yitzhak Rabin near Eilat, at the Jordan River near Beit Shean and at the Allenby Bridge would open for passenger traffic.

The media spokesman for the Jordanian Public Security Directorate said that King Hussein Bridge leading to the Allenby entry point would remain closed to freight traffic.

Meanwhile, Jordan's Interior Ministry said that its preliminary investigations into Sunday's shooting at the Allenby Bridge crossing confirmed that the alleged gunman was a Jordanian citizen named Maher Dhiyab Hussein Al-Jazi.

The alleged shooter -- whom Israeli security forces said they shot and killed -- was a resident of the Al-Husseiniyah area in Ma'an Governorate, and was crossing the bridge as a driver of a freight vehicle carrying commercial goods.

Al-Jazi acted alone, the ministry said, noting its investigation is ongoing. Authorities are attempting to organize the return of his body so he can be buried in Jordan.

-ABC News' Jordana Miller, Ghazi Balkiz and David Brennan