A projectile launch at Israeli territory, which appeared to be "errant fire from the internal fighting in Syria," was identified after rocket alert sirens were heard in the southeast Golan Heights near the border with Syria, the Israeli Defense Forces (IDF) reported.
Earlier in the day, the Israeli military warned that "since this morning, there has been an increase in the internal fighting in Syria and the Syrian Air Force's activity," adding that the army "is in high alert and will continue to operate against the violation of the 1974 Separation of Forces Agreement."
The alarm comes a day after the Israeli military shot down a Syrian Sukhoi warplane that allegedly violated the country's airspace.
Military tensions in the Golan Heights have been running high in the recent weeks amid the Syrian army's offensive to clear remaining pockets of terrorists in the country's south. In response, Israel has intensified its operations in Syria, citing the alleged Iranian military presence as a pretext for strikes.
Israel and Syria have been at loggerheads over the disputed Golan Heights. Israel occupied the area as a result of the 1967 Six-Day War with Syria and annexed the territory in 1981. The annexation has never been recognized by the international community.