A group of Russian bikers called the Night Wolves that regularly rides with President Vladimir Putin is heading to Ukraine to back pro-Russian protests, its leader has said.
The patriotic group opposes Ukraine's European integration and the protest movement that has taken power in Kiev. Its website says its members are "ready to die like warriors".
"Tomorrow people are organising an action called Russian Spring,"
Zaldostanov told the RIA Novosti news agency, saying the event would start from the town of Popasnaya in eastern Ukraine.
Putin has ridden a Harley-Davidson with the bikers and called them his "brothers". He is said to be close to its long-haired leader, Alexander Zaldostanov, nicknamed "the Surgeon".