Sirens blared across the northern Golan Heights around noon Tuesday.
The rockets or mortar shells reportedly crashed down in the groves near Ein Zivan. No one was hurt.
IDF sources cited in several news outlets blamed the explosions on unintentional "spillover" from the Syrian civil war and said they did not appear to be intended as attacks on Israel.
The sirens were sounded at Gonen, Kfar Blum, Odem, Neot Mordechai, Amir, Sdeh Nehemiah, Neveh Ativ, Majdal Shams, Katzrin, Lehavot Habashan and other Jewish and Druze communities.
IDF forces on Sunday night eliminated a terrorist cell as it was trying to place an explosive on the Israeli-Syrian border on the Golan Heights.
Reportedly, four terrorists were killed in the incident; no IDF soldiers were wounded in the exchange.
A senior IDF source said that an army surveillance patrol located the terrorists who had arrived at the border from Syria, and tracked them as they advanced.
When they reached the border and placed an explosive on it, IAF aircraft fired missiles at them, taking out every single member of the cell.
The IDF reported that the incident took place on Israeli territory just east of the security barrier.
The last security incident involving an attempted border bombing similar to this one took place last March, when an explosive was placed on the border. As a result of the explosion, an IDF paratrooper officer was critically wounded.
Earlier on Sunday Defense Minister Moshe Ya'alon (Likud) warned that Israel will strike Iranian attempts to smuggle advanced weapons to the Hezbollah terrorist organization in Lebanon, following Arab reports that an IAF airstrike the day before took out a Scud missile depot in Syria transferring weapons to Hezbollah.