Israel-Gaza-Lebanon updates: Officials say 87 killed in Israeli strikes on Beit Lahia

Thirty trucks carrying flour and food entered Gaza on Monday, according to Coordinator of Government Activities in the Territories (COGAT), the Israeli agency that oversees logistical coordination within the Gaza Strip.

This aid was meant for northern Gaza, COGAT said. However, a spokesperson for the World Food Programme told ABC News it has not yet reached the people there.

"Israel is not denying the entry of humanitarian aid, with an emphasis on food, into the Gaza Strip," COGAT said in response to an inquiry from ABC News.

-ABC News' Jordana Miller and Guy Davies

Samer Abu Daqqa, the head of Hamas' Aerial Unit, has been killed, the Israel Defense Forces claimed in a statement Monday.

Abu Daqqa was killed during an Israeli airstrike in September, the IDF said, but did not say where the attack took place.

After several members of the U.N. Interim Force in Lebanon were injured in airstrikes, Israeli Prime Minister Benjamin Netanyahu denied that the Israel Defense Forces was intentionally attacking the peacekeepers.

"The charge that Israel deliberately attacked UNIFIL personnel is completely false. It's exactly the opposite," Netanyahu said in a statement. "Israel repeatedly asked UNIFIL to get out of harm's way. It repeatedly asked them to temporarily leave the combat zone, which is right next to Israel’s border with Lebanon."

Netanyahu said he regrets "any harm done to UNIFIL personnel" and claimed the IDF was "doing its utmost to prevent such incidents."

"But the best way to assure the safety of UNIFIL personnel is for UNIFIL to heed Israel's request and to temporarily get out of harm's way," he said.

In the past 24 hours, 54 people have been killed and 258 have been wounded in Lebanon, according to the Lebanese Ministry of Public Health.

The total number of casualties since Israel's increased attacks on Lebanon in mid-September is now 2,309 people killed and 10,782 people injured, the ministry said.

A situational report from the Lebanese Prime Minister's Office on Monday said 200 airstrikes and shellings were recorded in various parts of Lebanon over the past 48 hours.

The Israel Defense Forces said in a release Monday that they found an underground compound in southern Lebanon stocked with "weapons, ammunition and motorcycles ready to be used in an invasion into Israel."

-ABC News' Ghazi Balkiz and Jordana Miller