Demonstrations broke out across Belarus on Sunday after a government exit poll.
Police confronted protesters in a number of cities across Belarus and there were reports of clashes in some, including Gomel and Vitebsk.
Some of the most intense clashes on Sunday night took place in the capital Minsk, where huge numbers of police who had cordoned off streets and squares earlier in the day faced off against thousands of opposition supporters who took to the streets after voting closed.
Dozens of people were reported arrested. Some are wounded.