TEHRAN  The Iranian leaders who cheered the popular overthrow of an Egyptian strongman last week have promised to crush an opposition march planned for Monday in solidarity with the Egyptian people.

“These elements are fully aware of the illegal nature of the request,” Mehdi Alikhani Sadr, an Interior Ministry official, said of the permit request for the march in comments published Sunday by the semiofficial Fars news agency. “They know they will not be granted permission for riots.”

The Islamic Revolutionary Guards Corps was blunt.

“The conspirators are nothing but corpses,” Hossein Hamadani, a top commander of the corps, said Wednesday in comments published by the official IRNA news agency. “Any incitement will be dealt with severely.”

But opposition supporters, hoping the democratic uprisings sweeping the region will rejuvenate their own movement, insisted the march would go forward. “There are no plans to cancel it,” Ardeshir Amir Arjomand, senior political adviser to the opposition leader Mir Hussein Moussavi, said in a statement published Sunday on opposition Web sites.