Minsk, Belarus (CNN)Thousands of mainly female peaceful protesters clutching white flowers and balloons lined the streets of Belarus's capital Minsk on Thursday, on the fifth day of demonstrations following the contested re-election of longtime President Alexander Lukashenko.

Authorities in Belarus say 6,700 people have been arrested and at least one person has been killed in the violent aftermath of the election, a contest that independent observers have criticized as neither free nor fair.