An investigator has said that a handmade explosive device detonated in southern Russia Wednesday evening, killing at least six people.

It has been reported that a regional investigator told the Russian news agency RIA Novosti the explosion outside Stavropol's House of Culture and Sport, before a Chechen band concert, also injured more than 42 people.

The investigator said that the bomb was made of about a half-pound of TNT.

Yekaterina Danilova further said, "According to preliminary information a self-made explosive device went off. It was either remote controlled or equipped with a timer and placed into an empty box of juice." (With Inputs from Agencies)