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

At least 28 people were killed and 160 others were wounded in an Israeli strike on the Abu Hussein School in northern Gaza where displaced people were sheltering, according to the Hamas-run Government Media Office.

In a statement, Hamas said Israel’s claims "that Abu Hussein School is being used for resistance purposes are mere lies, and it is a systematic policy of the enemy to justify its crime."

-ABC News' Samy Zyara

The German Ludwigshafen am Rhein corvette -- which is operating as part of the United Nations Interim Force in Lebanon -- downed an unidentified drone off the Lebanese coast on Thursday, a spokesperson at the German Ministry of Defense told ABC News.

The spokesperson did not describe how the aircraft was shot down, but said the ship acted in self defense.

There are approximately 60 crew members on board the vessel.

UNIFIL spokesperson Andrea Tenenti said that "electronic countermeasures were used and the UAV fell and exploded on its own."

-ABC News' Dragana Jovanovic and Guy Davies

Hezbollah said it launched a missile salvo towards Israel on Thursday morning.

The Israel Defense Forces said sirens sounded in northern Israel and "two projectiles were identified crossing from Lebanon into Israeli territory." One was intercepted and the other fell in an open area, the IDF said.

Fighting continues in southern Lebanon. There, Hezbollah claimed to have attacked two Israeli tanks near the border village of Labbouneh.

The IDF, meanwhile, said it killed a commander of Hezbollah's Kana sector.

-ABC News' Guy Davies

The World Health Organization has warned of a "very high" risk of cholera in Lebanon following the wave of mass displacement caused by Israel's nationwide airstrike campaign and southern ground offensive.

The WHO warning came after Lebanon's Health Ministry confirmed the first cholera case in the north of the country on Wednesday.

WHO "has activated a preparedness and response plan to strengthen surveillance and contact tracing," Director-General Tedros Adhanom Ghebreyesus said.

-ABC News' Dragana Jovanovic and Guy Davies