Israeli troops withdrew from the southern Lebanese town of Naqoura on Monday, amid growing accusations from both sides of major violations of the Israel, Hezbollah ceasefire.

US envoy Amos Hochstein arrived in Beirut on Monday ahead of a meeting of the committee monitoring the ceasefire between Israel and Lebanon’s Hezbollah, which has entered its second month. The visit comes amid mounting tension and accusations of violations from both sides.

A senior Israeli leader has warned that the country’s ceasefire with Hezbollah could collapse if the U.S.-designated terrorist group does not abide by the conditions of the deal. Defense Minister Israel Katz said that Israel is “interested” in the complete implementation of the deal,