Kaleme, which did not cite a source for its report, said the sentences were delivered last week giving the eight Facebook users a combined 123 years in jail.

They were charged with "insulting the supreme leader (Ayatollah Ali Khamenei) and the authorities, anti-regime activities, sacrilege and spreading lies," Kaleme said.

There was no official confirmation of the court ruling and AFP could not independently verify the report.

Access to the popular social networking site -- along with others which Iranian authorities regard as un-Islamic, immoral or undermining the Islamic establishment -- is obstructed by a massive filtering mechanism.