Ukrainian prosecutor general has called on Russia to extradite ousted President Viktor Yanukovych.
Yanukovych fled Ukraine last week following a months-long popular uprising. The parliament voted on Tuesday to send Yanukovych to be tried by the International Criminal Court once he has been captured.
Acting General Prosecutor General Oleh Makhnitsky also ordered the detention of 10 top former government, security and military officials on suspicion of mass murder in the capital Kiev.
The list includes former Prosecutor General Viktor Pshonka, former Interior Minister Valery Zakharchenko, Yanukovich aide Andry Klyuev and former Justice Minister Olena Lukash.
Yanukovych released a statement Thursday saying he was still the legitimate head of state in Ukraine and asked Russia for protection from "extremists."
Austria announced Friday it had frozen the local bank accounts of 18 Ukrainians suspected of potential human rights abuses and corruption.
Reuters contributed to this report.