Hezbollah lashed out at United Nations Secretary-General Ban Ki-moon over a report released on Monday warning of increasing instability in Lebanon.
The report on Security Council Resolution 1559 calls for the withdrawal of foreign forces from Lebanon and the disarmament of all militias.
Monday's release comes one week after Iranian President Mahmoud Ahmadinejad's official state visit to Lebanon, where he received a hero's welcome from Hezbollah.
In the report, Ban warns that the situation in Lebanon could spread throughout the region.
Hezbollah released a statement accusing the U.N. of meddling in Lebanese affairs.
"The report released by U.N. Secretary-General Ban Ki-moon on Resolution 1559…marks interference in internal Lebanese affairs as well as political interference in the affairs of the international tribunal," the statement read.
The group accused the secretary-general of failing to notice that Hezbollah "has been at the heart of Lebanese politics" through its inclusion in the parliament "for quite some time now."
Meanwhile, the U.N. Special Tribunal for Lebanon is expected to release indictments as early as next month, based on its three-year investigation into the 2005 assassination of former Prime Minister Rafik Hariri.
Some analysts believe the tribunal is likely to indict members of Hezbollah, which could trigger civil war in Lebanon.
Current Prime Minister Sa'ad Hariri, son of the slain premier, invited Hezbollah into his government.
Hariri futher granted Hezbollah the right to use its Iranian-provided arms cache against Israel.