The military struck underground facilities belonging to Hamas in the Gaza Strip on the night between Tuesday and Wednesday in response to the launching of incendiary balloons launched across the border, the army said.
Twenty-nine fires were started in southern Israeli communities by such balloons on Tuesday, according to authorities.
In recent weeks, incendiary and explosive devices, as well as rocket fire, have been directed into Israel from Gaza, prompting Israeli aerial bombardments in retaliation.
On Monday alone, incendiary balloons from Gaza caused 36 fires across the border in Israel.
The military also struck Hamas targets on the night between Monday and Tuesday, as well as on the previous night.
On Saturday, Israeli tanks hit Hamas positions after a rocket was launched earlier from the enclave.