Protesters in Ukraine have expressed scepticism that talks between an opposition leader and President Viktor Yanukovych can make progress.
Some in the capital Kiev shouted "Shame!" and whistled as Oleg Tyagnybok told crowds in Independence Square that the talks would reduce bloodshed, informing GHN according to BBC.
Others are reported to have set fire to tyres near opposition barricades.
Another opposition leader, Vitaly Klitschko, said that the president had made no concessions in the talks.
'Afraid of more deaths'
The boxer-turned-politician said that he feared further bloodshed.
"Hours of conversation were spent about nothing," he was quoted by the Reuters news agency as saying.
Mr Klitschko spoke to protesters manning barricades and to demonstrators in Independence Square.
"There is no sense sitting at a negotiating table with someone who has already decided to deceive you.
"I earnestly wish that there will be no bloodshed and that people are not killed... I will survive, but I am afraid there will be deaths, I am afraid of this," he said.
Mr Klitschko said that the atmosphere was still tense and that the outcome of the talks was "disappointing" for the protesters.
However nationalist Svoboda (Freedom) party leader Mr Tyagnybok insisted that the authorities had - during crisis talks lasting more than four hours on Thursday evening - promised to release activists arrested during the protests.
Mr Tyagnybok said there was "a high chance of halting the bloodshed" and that there was a proposal to create a buffer zone between protesters and security forces that would leave the main protest camp on Independence Square untouched by police.
But correspondents say that when Mr Tyagnybok asked for a show of hands as to whether the talks should continue, the response of the crowd was overwhelmingly negative.
Correspondents say it is not clear now when - if ever - the talks will resume.