The Israel Defense Forces said it struck 180 targets in Lebanon on Saturday, targeting "launcher barrels" that were ready for launching weapons toward Israel.

Four people have been injured in the Israeli strikes Saturday, one critically, the Lebanese Ministry of Health said.

The IDF said 90 launches were identified coming from Lebanon today but no casualties or damage were reported.

Hezbollah said they have launched nine aerial attacks toward Israel on Saturday.

The IDF said it “will continue operating to dismantle and degrade Hezbollah's capabilities and terror infrastructure.”

- ABC News’ Ghazi Balkiz and Anna Burd.

The Lebanese health ministry issued another update Saturday, bringing the total number of dead in Friday's Beirut strike to 37. It says first responders are continuing to search the rubble.

The dead include at least three children – ages 4, 6 and 10 – and seven women, the ministry said during a press conference earlier. Dozens more people have been wounded.

The Israel Defense Forces described the strike on Friday as a "targeted" assault.

Twenty-two people were killed and 30 more were injured in an Israeli strike on a school in Gaza City, according to the Hamas-controlled Gaza Ministry of Health.

Civil Defense, the local first responders, said they recovered the bodies of 13 children.

The Israel Defense Forces said in a statement a military strike targeted terrorists who were operational in a "Hamas command and control center."

Video shows rubble strewn in hallways and classrooms turned shelters. A witness told Reuters that women and children were gathered in the yard when two missiles hit the school.

Additional verified video shows first responders gathering body parts from under rubble, along with toddlers with severed limbs being tended to.

-ABC News' Victoria Beaule

The Israeli military on Saturday began strikes within Lebanon that were aimed at targets belonging to the Hezbollah militant group, the Israel Defense Forces said.