United Nations experts on Wednesday condemned Israel's bombing in Lebanon earlier this month as "illegal aggression and indiscriminate bombing campaign", the United Nations Human Rights Council said.

"This is not self-defence. It is a blatant violation of the UN Charter, a deliberate destruction of prospects for peace, and an affront to multilateralism and the UN-based international order," the experts were quoted as saying in a statement.

Israel carried out its heaviest strikes on Lebanon since the conflict with Hezbollah broke out last month, killing more than 250 people on April 8, as the Iran-aligned group resumed rocket attacks on northern Israel after a brief pause under a two-week U.S.-Iran ceasefire.

Israeli Prime Minister Benjamin Netanyahu has said Lebanon was not part of the ceasefire.