Security services have arrested six people suspected of organizing and carrying out a recent terrorist attack in Stavropol in southern Russia that killed seven and injured more than 40 people, a police source said on Sunday.

A powerful blast went off outside the House of Culture and Sport in the city of Stavropol on Wednesday evening before a Chechen concert was to begin.

A source in the North Caucasus republic`s security service said on Friday that two suspects in a deadly terrorist attack in the southern Russian city of Stavropol were detained in nearby Ingushetia,

"By now, six people suspected of preparing and carrying out the terrorist attack before the concert of the Chechen Vainakh dance ensemble in Stavropol. The persons were detained on the territory of Ingushetia," the source said.

According to investigators, the detained persons included both those who masterminded and carried out the terrorist attack.

According to security services, all the detained persons are members of the illegal armed formations operating in the North Caucasus.

The Stavropol Territory is the largest region in the North Caucasus Federal District, but has remained largely free of the violence that plagues the mostly Muslim neighboring republics, including Ingushetia.
sections: Celebrities