Hezbollah fired a barrage of rockets and drones toward northern Israel on Tuesday morning and afternoon, injuring at least two people, after an earlier Israeli airstrike killed at least five people in southern Lebanon, according to authorities on both sides.

The Lebanese militant group said in separate statements that Tuesday's attacks against Israel -- at least four so far -- were carried out both in support of the Palestinian people in the war-torn Gaza Strip and in response to recent Israeli airstrikes on southern Lebanon.

One of those drones was intercepted by Israeli air defense and the falling shrapnel injured "several civilians" south of Nahariya, the northernmost coastal city of Israel, according to the IDF.

Israel's Magen David Adam rescue service said its first responders were deployed to the scene and treated a 30-year-old man in serious condition and a 30-year-old woman in mild-to-moderate condition with shrapnel injuries to the lower limbs. Both patients were transported to the Galilee Medical Center in Nahariya.

"We saw the male unconscious in the car with a severe head injury from shrapnel. A female who was fully conscious with shrapnel injuries to her lower limbs was in a parking lot nearby," paramedic Roi Vishna and senior EMT Noam Levi said in a joint statement released by MDA." We treated the male including ventilating him and providing medications, and evacuated him by MICU in very serious condition to hospital. The female casualty was evacuated in mild to moderate condition."

Hezbollah launched the counterattacks after an Israeli airstrike on the town of Mifdoun in southern Lebanon killed at least five people on Tuesday morning, according to the Lebanese Ministry of Health. It was not immediately clear whether civilians were among the casualties.

Israel and Hezbollah have exchanged near-daily strikes for the past 10 months amid the ongoing war in Gaza. But regional tensions have soared following last week's assassinations of Hamas political leader Ismail Haniyeh in Iran's capital and Hezbollah commander Fouad Shukur in Lebanon's capital.

-ABC News' Ghazi Balkiz, Jordana Miller and Morgan Winsor

The Israel Defense Forces confirmed on Monday they had killed another Hezbollah commander in a strike on Lebanon. Ali Jamal Aldin Jawad, a commander in Hezbollah's Radwan Force, was killed in the strike.

The death was also confirmed by Hezbollah.

"His elimination significantly degrades the capabilities of the Hezbollah terrorist organization to promote and carry out terror activities from southern Lebanon against northern Israel," the IDF said.

Israel's killing of a Hezbollah official in Beirut, Fuad Shukr, and a Hamas official in Iran, Ismail Haniyeh, has pushed the Middle East to the brink of further war.

The deceased remains of an estimated 80 Palestinians -- which Israeli forces took from Gazan cemeteries to identify whether hostages had been buried there -- were returned by the Israel Defense Forces.

The bodies were decomposed beyond recognition, with Gazan officials saying between three and four bodies were in each bag. They will be reburied in a mass grave in Khan Younis.

A Gazan civil defense official on the ground said there is no data as to who these individuals were.

"I wished I could find him, to be at peace," Suwa Abu Rajilah, a mother who traveled to the site to see if her son, killed in the war, was there. "To say I buried him, but I couldn't find him."

-ABC News' Dia Ostaz

The U.N. has fired nine employees following a lengthy investigation into ties to the Oct. 7 attacks, the organization said.

The U.N.’s Office of Internal Oversight Services investigated 19 staff members with the UN Relief and Works Agency for Palestine Refugees in the Near East as part of the probe.

For nine of the staffers, evidence was found that they “may have been involved in the armed attacks,” the U.N. said.

“The employment of these individuals will be terminated in the interests of the Agency,” the organization said in a statement.

There was no evidence or insufficient evidence that the other investigated staffers had been involved, they added.