The Israeli army on Saturday warned Syria after stray fire from its civil war hit the Israeli-occupied Golan Heights in the latest of a string of incidents across the armistice line.

Military statements said that two "projectiles", which the army did not identify, fell on open ground in the northern Golan -- territory seized from Syria in the Six-Day War of 1967.

Both were the "result of internal fighting in Syria," the army said, adding that there were no reports of casualties.

"Israel holds the Syrian regime responsible for any breach of its borders and will act accordingly," chief military spokesman, Brigadier General Ronen Manelis said in a statement.

"Israel maintains a policy of non-involvement in the Syrian civil war. However, we will not tolerate any breach of Israel's sovereignty."

There has been repeated stray fire across the armistice line for the past week as Syrian troops battle rebels, including hardline Islamists, on the other side.

There have been no casualties but Israel responded to the previous incidents by striking Syrian army positions.

Rebels recently launched an offensive against government forces in Quneitra on the Syrian side of the armistice line.