Thousands of people started protest demanding ouster of the country's ruler Moammar Gaddafi. Unconfirmed sources reported that troops have fired machine guns on crowds of anti-government protesters.
Exiled Libyan opposition groups informed about the raising death toll which has mounted to 120, with up to 1,000 injured.
Citing the protest, US government issued travel alert as it stated, "US citizens are urged to defer non-essential travel to eastern Libya at this time."
US government also said that spontaneous anti-regime demonstrations and violence in Libya are possible throughout the next several days.
"While demonstrations have not been directed toward Westerners, US citizens are urged to remain alert to local security developments and to be vigilant regarding their personal security," US government's statement added.
The heat of protests in Egypt, Yemen easily moved Libya as the country shares borders with Tunisia and Algeria in the west, and Egypt in the east.
According the reports, Moammar Gaddafi has faced nation-wide revolutionary protest for the first in his 42 years of reign.