Libya's congress was due to select a new cabinet today after demonstrators stormed the assembly building on Wednesday, blocking the vote.
The 100 protesters met little resistance as they broke into the hall, complaining that Prime Minister Ali Zidan's proposed 27-strong cabinet included members with links to ousted leader Muammar Gadaffi.
Interim President Mohammed al-Megarif managed to convince the demonstrators to leave, but they later returned forcing the vote to be postponed.
Mr Megarif condemned the chaos, saying he wanted "all Libyans and the whole world to know in what conditions we operate."
Mr Zidan's predecessor Mustafa Abushagur lost a confidence vote after his choice of executive was rejected for lacking diversity and putting forward unknown candidates.
The PM said he had met the largest groups in the 200-member parliament to ensure they supported his geographically factionally balanced list.