Libya's main Internet service provider, General Post and Telecommunications Company, began to cut Internet access on Friday, said Earl Zmijewski, general manager with Internet monitoring company Renesys. "They started pulling the plug around 23:18 UTC today and are currently largely off the air," he said via e-mail. That was 1:18 a.m. Saturday, local time.

Libya appears to be taking its cue from Egypt, which cut off all Internet access at the end of January as it was roiled by street protests calling for political reform.

In similar fashion, thousands of Libyans took to the streets in the city of Benghazi this week in protests that have led to 46 killings in the past three days, according to Amnesty International.

As the situation has escalated, Internet traffic has been cut, making it difficult to get a picture of the situation on the ground.

Libya is much smaller than Egypt, with fewer networks to unplug, and it appears that this has made the job of cutting Internet access much simpler.