Two suspected militants have been killed in a special operation in Russia's Republic of Tatarstan.
Two men -- Rais Mingaleyev, 38, and Beslan Nazipov, 35 -- refused to leave a garage in Tatarstan's central city of Chistai on May 1 and opened fire at police and security troops.
They were killed, while three police officers were wounded in the operation.
Tatarstan's Interior Ministry said on May 1 that Mingaleyev and Nazipov were suspected of involvement in the 2012 attacks in Tatarstan's capital, Kazan, in which Mufti Ildus Faizov was seriously injured and his former deputy, Valiulla Yakupov, was killed.
In a video that circulated in the Internet after the attacks, Mingaleyev took responsibility for the attacks and introduced himself as the leader of Tatarstan's mujahedin who were loyal to the Islamic insurgency in Russia's North Caucasus.
Based on reporting by Interfax and ITAR-TASS