In pictures: Fire and violence scar streets of Ukraine
The Ukrainian government is ready to use all tools available to restore order if the opposition creates an impasse and unrest continues, Prime Minister Mykola Azarov said.
He said: "People should not think that the government lacks available resources to put an end to this. It is our constitutional right and obligation to restore order in the country."
Azarov said the government had no plans to introduce a state of emergency: "We don't see the need for tough and extreme measures at the moment... But don't put the government into an impasse," he said.