Officials say a strong earthquake on Saturday hit Russia's North Caucasus region, an uncommon occurrence for the region. No reports of damage or injuries have been immediately reported.
The US Geological Survey says the quake hit around IST 1430 and registered around 5.9 magnitude. It was centred northeast of the Chechen capital, Grozny.
Russian news agencies say it was felt throughout the North Caucasus. Interfax says the quake rattled Grozny for more than 30 seconds.
Russia's Caucasus Mountain region sees occasional earthquakes. Most buildings are not reinforced against severe structural shocks and even small quakes can cause serious damage.