Georgia's opposition politicians are denouncing the government over a hoax television broadcast that said Russia had invaded and the president had been killed.

The country's main opposition group on Monday accused the government of trying to retain power through "information terror."

The simulated broadcast Saturday sparked wide anxiety in Georgia, which is still traumatized by the August 2008 war in which Russian troops advanced deep into the country.

Cellular phone networks briefly went down as panicked Georgians phoned each other.

Imedi, the station that aired the show, is private, but its director is a former chief of staff for President Mikhail Saakashvili. Opponents say the broadcast was government propaganda.