The death toll from a terrorist attack in the south Russian city of Stavropol has risen to 7, an emergencies service official said on Thursday.
An explosive device went off outside the city's House of Culture and Sport early on Wednesday evening before a Chechen band's concert.
The explosion also injured more than 40 people, with 30 of them remaining in hospital.
Police say that the explosion was equivalent to 0.4 kg of TNT.
An improvised explosive device, a gun and ammunition were found during searches of the homes of two people suspected of involvement in the blast, a police source said.
The Stavropol Territory is the largest region in the North Caucasus Federal District, and hosts its administration, but has remained largely free of the violence in the neighboring republics of Chechnya, Ingushetia and Dagestan.
Stavropol Territory Governor Valery Gayevsky said the terrorist attack was aimed at shattering national unity.
No one has yet claimed responsibility for the blast.
STAVROPOL, May 27 (RIA Novosti)
