He warned that more attacks were to come on Russian soil because of perceived repressions of Chechnya by Prime Minister Putin .
On 31 March 2010 , Umarov claimed responsibility for personally ordering the Moscow Metro bombings which took the lives of 40 civilians .
Umarov warned that more attacks were to come on Russian soil because of perceived repressions of Chechnya by Prime Minister Putin .
On 31 March 2010 , Umarov claimed responsibility for personally ordering the Moscow Metro bombings which took the lives of 40 civilians .