The Israeli military launched airstrikes against targets inside Gaza on Friday, killing a leader of an Islamist militant group and least nine others, and prompting retaliatory rocket attacks toward Israeli communities.

The Palestinian Ministry of Health said at least 10 people were killed and 55 injured in two initial strikes, one in Gaza City and another in Khan Younis in southern Gaza. Video posted on social media showed extensive damage to at least one multistory building.

Among those killed was Taysir al-Jabari, a top Islamic Jihad leader, according to a statement by Palestinian Islamic Jihad. A 5-year-old girl was also killed, the ministry said.