Russian authorities say they have detained 15 radical Islamists in Moscow.
The Interior Ministry said on November 26 that 14 members of Takfir wal-Hijra, a radical Islamic group, were discovered hiding weapons and explosives in their apartments.
One more suspected member of the group was detained at another address in Moscow later on November 27.
The ministry said the group has been funding its activities by "conducting general crime."
Takfir wal-Hijra was formed in Egypt in the 1960s and outlawed in Russia in 2010. It is believed to have cells linked to Al-Qaeda in a number of countries in Europe and elsewhere.
Russia remains on heightened alert ahead of the February Winter Olympic Games in the Black Sea resort of Sochi, close to Russia's restive North Caucasus region.
Based on reporting by AFP, Interfax, and RIA-Novosti