"Terrorists in Gaza launched explosive balloons into Israel throughout the day," the IDF tweeted late on Thursday. "In response, our aircraft just struck Hamas underground terror infrastructure in Gaza. We won't let Hamas terrorize Israeli civilians."
According to Israeli news site i24, several incendiary balloons drifted across the border into Israel on Thursday, where they ignited small fires that had to be extinguished.
The number of Palestinians injured or killed by the airstrike remains unknown.
A Palestinian activist in Gaza posted a video on Twitter of an airstrike, saying it was the IDF's attack.
It's not clear who was responsible for the balloon attacks, as there are many groups that operate in the Gaza Strip.