Several people -- including the suspected bomber -- were wounded in the blast near the Russian capital.
Eastern Orthodox Church
Second-largest Christian church
The Eastern Orthodox Church, also called the Orthodox Church, is the second-largest Christian church, with approximately 220 million baptised members. It operates as a communion of autocephalous churches, each governed by its bishops in local synods. The church has no central doctrinal or governmental authority analogous to the Bishop of Rome (Pope), but the Ecumenical Patriarch of Constantinople is recognised by all bishops as primus inter pares and regarded as the representative and spiritual leader of Eastern Orthodox Christians. As one of the oldest surviving religious institutions in the world, the Eastern Orthodox Church has played a prominent role in the history and culture of Eastern and Southeastern Europe, the Caucasus, and the Near East. The Eastern Orthodox Church officially calls itself the Orthodox Catholic Church.