The IDF said it was responding to shells fired from Syria into Israel on Tuesday night.
Some of the shells most likely landed in open fields in Israel's Golan Heights, the military added.
The IDF responded with artillery and mortar fire toward the source of the Syrian shelling.
Amid Gaza war, tensions rise along Lebanon, Syria border
Fire from Syria came after the IDF confirmed that Israeli tanks targeted Hezbollah observation points in southern Lebanon after some 15 rockets were fired into northern Israel.
Sirens sounded in the border communities of Metzuva, Betzet, Shlomi, Hanita, Achziv and Liman in the western Galilee area. A rocket was reported to have fallen in Shlomi, but no injuries or damage were reported.
This is a developing story.