A newly appointed U.S. envoy says she hopes Lebanese authorities are committed to making sure that the Hezbollah militant group is not a part of the new government in any form.

President Donald Trump's envoy is set to deliver a firm message to Lebanese leaders during a visit on Thursday: the U.S. will not tolerate the unchecked influence of Hezbollah and its allies over the formation of a new government.

The United States has set a "red line" that Shi'ite armed group Hezbollah should not be a member of Lebanon's next government after itr military defeat by Israel last year, U.S deputy Middle East envoy Morgan Ortagus said in Lebanon on Friday.

Israeli military said it had struck infrastructure belonging to Hezbollah at two sites that were in "violation of the ceasefire agreement."

Israel said late on Thursday it had struck two sites in Lebanon that allegedly contained weapons belonging to the Hizbollah group, despite a ceasefire deal.