President Hosni Mubarak, who blames Sudan for an attempt on his life, boasted Wednesday that Egypt could topple its southern neighbor's radical Islamic regime in 10 days.
Sudan's military ruler and the Islamic cleric thought to be the power behind the regime both denied any role in the attack by gunmen Monday on Mubarak's limousine in Ethiopia.
Mubarak accused cleric Hassan Turabi by name earlier in the week. In his first public response, Turabi said on Sudanese television, "We have no connection with this incident."
Hundreds of Egyptian militants are thought to be training at camps in Sudan. Last year, 300 were arrested trying to cross into Egypt. More than 750 people have been killed in a 3-year-old campaign inside Egypt to overthrow Mubarak's government and impose Islamic rule.
In another dispute, a clash between border guards was reported near the Red Sea territory of Halaib, claimed by both countries.
Egyptian officials said guards on both sides of the frontier got into a scuffle, allegedly over Mubarak's allegations against Sudan. Shots were exchanged, they said. Six people were reported hurt.
Sudan described the Egyptian actions as intended to "make the occupation of Halaib a fact."
Back in Cairo, well-wishers _ including several hundred Sudanese exiles _ gathered for a second day of government-organized festivities celebrating Mubarak's escape from the attack.
Greeting them at the presidential palace, the 67-year-old leader said Egypt doesn't interfere in Sudan's affairs.
"But if we wanted to interfere and overthrow the government _ and this is not our style _ we could do that in 10 days," he warned. Mubarak didn't say whether Egypt would take action against Sudan.