The deadly stabbing attack in Dagestan follows a similar incident in Siberia that left eight people injured, according to reports.
Within less than a month since the order by the self-confessed "foot soldier of Putin," almost 1,000 divorced Chechen couples have reunited, state TV reported.
The report, published earlier this week, found widespread evidence of FGM in the southern Russian republic.
Shots and two explosions were reported in St Petersburg Wednesday morning.
A local martial artist sparked outrage after documenting desecration of a holy monument.
The Kremlin has refused to speculate on the culprits behind the attack.
Over 3,500 bank accounts were frozen in 2015, the head of Rosfinmonitoring told Vladimir Putin.
The group urges militants from the Caucasus to plan attacks and start a land grab.
Sources in law enforcement are blaming a suicide bomber, but those reports are unconfirmed.
The man was reportedly plotting attacks in Chechnya and Dagestan.