Authorities in Russia's Dagestan region have identified key figures among the assailants in Sunday's deadly attacks on places of worship, which killed at least 20 people. The attackers, including a former MMA fighter and relatives of a regional official, targeted sites in Derbent and Makhachkala. The violence resulted in the deaths of 15 police officers, four civilians, and an Orthodox priest. Regional head Sergei Melikov announced the dismissal and expulsion of the district head linked to the attackers. Dagestan declared three days of mourning following the attacks.
