KIEV, March 10 (Xinhua) -- Ukrainian Interior Ministry condemned the unrests staged by far-right protesters in Kiev and the city of Cherkassy in central Ukraine as "unacceptable" on Saturday, local media reported on Sunday.
"Those who crossed the line should be punished," Interior Minister Arsen Avakov was quoted as saying by the government-run Ukrinform news agency.
The law enforcement authorities have already initiated criminal proceedings into the violence in Cherkassy, Avakov said.
On Saturday, activists from the far-right political group National Corps staged protests outside a presidential administration in Kiev and at a presidential campaign event in Cherkassy attended by President Petro Poroshenko, against the alleged corruption in Ukraine's state-run defense conglomerate Ukroboronprom.
The activists demanded the authorities to arrest several officials from Ukroboronprom and the National Security and Defense Council over their alleged role in corruption schemes in the conglomerate.
The protests turned violent, when the activists clashed with police. According to the Kiev police and the Interior Ministry, three police officers were hurt in the clashes in Kiev and 22 others were injured in the unrest in Cherkassy.
Last month, local media outlet "Bihus.info" issued an investigative report claiming that Ukroboronprom enterprises purchased components for producing goods at highly inflated prices. The press service of the conglomerate said that journalists did not indicate their sources and used the manipulative approach in their investigation.
Ukroboronprom, established in 2010, includes some 130 enterprises from various sectors of Ukraine's defense industry. Since 2014, the conglomerate has supplied the Ukrainian armed forces with more than 25,000 units of new and modernized weapons and military equipment.