Ukraine on Thursday accused both ousted pro-Kremlin president Viktor Yanukovych and Russian security agents of being responsible for February unrest in Kyiv that claimed nearly 90 lives.
Acting interior minister Arsen Avakov said Yanukovych issued the "criminal order" to fire at the pro-EU protesters while agents from Russia's Federal Security Service (FSB) helped him plan and carry out the deadly assault.
"Yanukovych issued the criminal order... to open fire against protesters on February 18-20," Avakov told reporters.
"FSB agents took part in both the planning and execution of the so-called anti-terrorist operation," he added.
Three months of at-times violent anti-government protests by supporters of closer European ties culminated in two days of carnage in Kyiv that led to parliament's February 22 ouster of Yanukovych and his Russian-backed government.
Nearly 20 people — most of them protesters — died of gunshot wounds during hours of street battles across central Kiev on the night of February 18-19.
More than 60 people were killed on February 20 during battles that broke out on Kyiv's central Independence Square in the morning and continued into late afternoon.
Many of those who died appeared to have been killed by snipers.
Russia has suggested that ultranationalists were the first to open fire against the police in an effort to spark a larger altercation that could then be blamed on Yanukovych and his backers in the Kremlin.
Ukrainian prosecutors on Thursday announced the arrest of 11 Ukrainian anti-riot police officers and their commander for their involvement in the unrest.