Israel-Gaza updates: Netanyahu weighs plan to force civilians out of north Gaza

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.

Thirty-one people were killed and 68 were injured in Israel's strike on Friday in Beirut, the Lebanese Health Ministry said Saturday.

Among the dead are three children -- ages 4, 6 and 10 -- and seven women, the ministry said during a press conference. Three Syrian nationals were also killed, it said.

Among the wounded, 53 have been discharged from hospital. Two remain in critical condition, the ministry said.

Rescue teams were on Saturday morning still searching the rubble searching for additional bodies. The health multiple buildings and cars were damaged and destroyed in the strike.

The Israel Defense Force described the strike on Friday as a "targeted" assault, saying it killed a key Hezbollah commander, Ibrahim Aqil, along with his chain of command.

-ABC News' Ghazi Balkiz, Nasser Atta, Emma Ogao and Victoria Beaule