An Israeli air strike in the Gaza Strip killed a member of the Islamist militant Hamas group on Thursday and wounded two others, Hamas sources and medical officials said.
The Israeli military confirmed in a statement that it had carried out an air strike.
It said it targeted Hamas militants who were about to launch balloons rigged with flammable material over the border into Israel.
Fires caused by incendiary helium balloons and kites launched by Palestinians in Gaza over the border into Israel have ravaged tracts of farmland there in recent months.
Israel has vowed to stop the attacks, even at the risk of wider conflict.