The strikes came a day before the Rafah crossing along Gaza's border with Egypt is set to open, marking a major step in the second phase of the ceasefire.
Hamas remains heavily armed and still holds thousands of rockets and anti-tank missiles and tens of thousands of Kalashnikov rifles, Israeli officials say.
Gaza’s government urged its more than 40,000 civil servants and security personnel to cooperate with the Palestinian technocratic body with U.S. oversight that is meant to exclude Hamas.