Hundreds and thousands of pro-Russian demonstrators stormed government buildings in several major cities in eastern Ukraine.
A large group of people, including many in masks carrying sticks and stones, surged into the provincial government building and smashed windows on Sunday in Donetsk. Which is 80 kilometers west of the Russian border.
The gathering of several hundred, many of them waving Russian flags, then listened to speeches delivered from a balcony with a banner hanging reading 'Donetsk Republic', news24 reports.
Activists in the building said they want to see a referendum for the Donetsk province to join Russia.
In Luhansk, to the northeast from Donetsk, hundreds of people surrounded the local headquarters of the security service and scaled the facade to plant a Russian flag on the roof, the report said.
On Saturday, Ukraine's security service said it had detained a 15-strong armed gang planning to seize power in Luhansk province, the report added.