Unidentified assailants on Friday opened fire on the Federal Security Service (FSB) building in the town of Derbent in the Russian North Caucasus republic of Dagestan, one attacker was killed, investigators said on Friday.
"The incident occurred at 3:45 p.m. Moscow time [11:45 GMT]. Unidentified attackers opened fire at the FSB building from a VAZ-21099 car and tried to escape. A police detail pursued the criminals and engaged in a gunfight with them, killing one of them," a police spokesman said.
"The remaining two left their car and hid in a house where they were blocked. Talks are underway with them," he said.
More than a decade after the end of a federal war against separatists in Russia's North Caucasus republic of Chechnya, Russian security forces continue to fight militants in other republics in the region, including Dagestan.