Israel's military says it has launched new airstrikes against Hamas militants in Gaza, testing the ceasefire that began on Oct. 10.

Israel freed dozens of doctors, nurses and other medical workers as part of this week's release of hundreds of Palestinian prisoners and detainees under the Gaza ceasefire deal.

Health officials say Israeli strikes in Gaza City overnight and at a refugee camp have killed more than 40 people, including 19 women and children.

Israeli strikes have killed at least 14 people overnight in Gaza City, according to health officials.