Nazran: A car bomb exploded outside a bank in southern Russia's violence-plagued Ingushetia region on Monday, injuring at least five people, authorities said.

The bomb went off beneath a Mercedes parked on a central street in the regional capital, Nazran, the Ingush Interior
Ministry and the regional emergency department said.

The blast occurred when a police officer used a remote control to unlock a car that belonged to him, the regional Investigative Committee said.

The officer and another policeman who was with him were seriously injured.

Three passers-by were also hurt in the explosion. One declined medical treatment.

The Emergency Situations Ministry's southern Russia branch said that six people were injured.

Ingushetia, a small region adjacent to war-scarred Chechnya in Russia's volatile North Caucasus, is the site of frequent attacks targeting law enforcement authorities.