Israeli military said it had begun striking targets belonging to Hezbollah's elite unit, the Radwan Force, in the Bekaa region of eastern Lebanon, as it accuses the Iran-backed Islamist group of seeking to rebuild its forces in violation of a ceasefire agreement.

In Syria, Israel launched rare attacks on forces of the new government, while in Lebanon it took aim at the Iran-backed militant group Hezbollah.

Israel's ongoing military strikes in Lebanon send a "clear message" to Hezbollah, Defence Minister Israel Katz said on Tuesday, accusing the Iran-backed Islamist group of seeking to rebuild its forces in violation of a ceasefire agreement.