MAKHACHKALA, Russia, May 10 (Reuters) - A suicide bomber killed one police officer in the capital of Russia's violence-plagued Dagestan region in the North Caucasus on Tuesday, an 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.
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.
Violent incidents occur almost daily in the mainly Muslim provinces of the North Caucasus, where rebels want to establish an Islamic state.
Nearly a decade after federal forces drove a separatist government from power in neighbouring Chechnya, Dagestan is considered the heart of the insurgency. It has seen some of the worst violence, including clashes that killed nine on Sunday.
In the nearby Kabardino-Balkaria province, four alleged Islamist militants were killed by security forces on Tuesday, Russian news agencies reported.
