A teenager described as a model student shot a teacher and a police officer dead and took more than 20 of his schoolmates hostage in a Moscow classroom on Monday, days before Russia hosts the Winter Olympics under tight security.
The suspect was disarmed and detained about an hour after the shootings after talking to his father, the owner of the two rifles with which he forced his way into the school in northern Moscow at midday.
Irina Yarovaya, a pro-Kremlin lawmaker who heads the security committee in the State Duma, put some blame on "propaganda of aggression", such as violent computer games, but also said access to guns should be tightened.
She said the punishment for legal gun owners whose negligence enabled others to get their hands on weapons was "infinitesimal". The maximum sentence for the offence is six months.
Duma international affairs committee head Alexei Pushkov suggested Russia had embraced U.S. culture with deadly effect.
"Moscow school shooting: American movies and domestic serials, full of violence, are producing results - now it is like the USA here," he tweeted. "Is this what we wanted?"