Libya's Supreme Court on Thursday declared the internationally recognised parliament as unconstitutional, in a ruling likely to fuel further chaos in the north African oil producing nation.
The latest flare-up of violence in Libya, which erupted on Saturday, takes the death toll in Tripoli to 124 since July 13, with more than 500 wounded.
The attack was claimed by the Operations Cell of Libyan Revolutionaries, a coalition of Islamist militias seen as the armed wing of Islamists within the General National Congress (GNC) or parliament of Libya.
Libyan Prime Minister Ali Zeidan said on Friday the government was safe and security under control, dismissing a statement by a senior army official calling for the parliament to be suspended and the armed forces to "rescue" the country.
Several thousand Libyans marched in Tripoli and Benghazi on Friday to demand the dissolution of the interim national parliament, whose mandate was due to run out on Friday with the country divided over its future.