At least 14 people have been killed in clashes between protesters and the military in the past four days.
Maj. Gen. Adel Emara, a member of the council that took power after Hosni Mubarak was deposed in a popular uprising in February, called the protests an organized attack on the military junta, abetted by the media.
"There is a methodical and premeditated plot to topple the state, but Egypt will not fall," said Emara. "The media is helping sabotage the state. This is certain," he added.
On Friday, military forces guarding the Cabinet building near Tahrir Square cracked down on a 3-week-old sit-in aimed at forcing the generals to hand power to a civilian authority.
Since the protests began, activists have flooded social networking sites with photos and video of troops assaulting protesters, including images of women being beaten and dragged through the streets.