Thousands of police have moved on a large protest camp in the centre of the Ukrainian capital, Kiev, SIA reports citing BBC News.
Police have torn down barricades and reoccupied part of the main opposition site in Independence Square.
A stand-off developed after clashes broke out between security forces and protesters.
The government's decision to withdraw from a free-trade deal with the EU last month has sparked huge street rallies by the opposition.
Sea of police
The latest police action comes after EU foreign policy chief Catherine Ashton held talks with President Viktor Yanukovych on Tuesday.
Baroness Ashton, who was cheered by crowds when she visited Kiev's main protest site, said she was saddened that police had later used force to try to remove protesters.
"I was among you on Maidan (the name for Independence Square) in the evening and was impressed by determination of Ukrainians demonstrating for European perspective of the country," she said in a statement posted on Facebook.
"Some hours later I observe with sadness that police uses force to remove peaceful people from the centre of Kiev. The authorities didn't need to act under the coverage of night to engage with the society by using police."
Bütün xəbərlər Facebook səhifəmizdə
USD
EUR
GBP
RUB