A suicide bomber killed one police officer in the capital of Dagestan region in the North Caucasus on Tuesday, a Russian official said.

The bomber detonated explosives strapped to his body when police tried to stop him at an intersection to check his documents, the official said on condition of anonymity.

The blast killed one police officer and wounded another, he said. The bomber was also killed.

Russia's Interfax news agency initially reported a car bomb blast, but later cited a police official as saying the explosion was set off by a suicide bomber.

Reuters