Russian media reports say that a gunman who killed one security officer and wounded five other people outside Moscow's headquarters of Russia's main security agency was a member of a rifle club.
REN TV television station and the Komsomolskaya Pravda daily identified the attacker as 39-year-old Yevgeny Manyurov, a resident of the town of Podolsk just outside Moscow.
They said that Manyurov worked as a private security guard and practiced shooting. He owned a small arsenal of shotguns and rifles and took part in shooting competitions, finishing third in a November event.
Residents of an apartment building in the town of Podolsk where Manyurov lived with his mother, described him as a loner who barely talked to anyone.
The Russian authorities didn't identify the assailant, who opened fire Thursday just outside the main headquarters of the Federal Security Service, or FSB, the main KGB successor agency. He killed two officers and wounded five others, including a civilian, before police shot him dead.
Officials didn't comment on the gunman's possible motives, but the attack came shortly after President Vladimir Putin wrapped up his annual news conference.
At about the same time when the shooting happened, Putin, a KGB veteran, spoke at a Kremlin concert honoring FSB officers and other security personnel less than one kilometre away.