Internet services in Libya, already spotty throughout the country's violent upheaval, look completely halted in what analysts consider an attempt to stifle information about the insurrection.
The move, coming ahead of planned protests in Libya, appears similar to Egypt's response to the demonstrations that led President Hosni Mubarak to step down last month. The Libyan government controls the country's primary Internet service provider.
Arbor Networks, which monitors networks, said Friday that all Internet traffic coming in and out of Libya had ceased, starting at about noon EST Thursday (7 p.m. in Tripoli, Libya).
It's not clear whether cell phone service in Libya had been disrupted. Libya has one of the highest concentrations of cell phone users in Africa. The Libyan government owns the country's two mobile phone operators.