Azerbaijan, Baku, March 11 /Trend/
Online activists said Friday that the Saudi capital Riyadh was quiet, with no protests seen after mid-day prayers, but that there were helicopters hovering over the city, dpa reported.
Activists said major streets had been cordoned off by security and that there was a heavy security presence around mosques.
This comes as protesters had been warned by authorities against taking part in a so-called "Day of Rage," where activists said they would protest nationwide to demand greater reforms and freedoms in the conservative kingdom.
Meanwhile, a collective of anonymous hackers called Anonops wrote on Twitter that its members are going to target Saudi government websites to support activists on the ground.