Violence targeting Russian Caucasus region of Dagestan killed at least eight people.

Violence targeting Russian Caucasus region of Dagestan killed at least eight people.

Five Russian police officers were killed as a female suicide bomber blew herself up at a checkpoint in Karabudakhent village.

"A woman set off a bomb with two kilograms of TNT on her body at the checkpoint in Karabudakhent village," the Dagestan regional police said on its website.

The attack took place on Tuesday, regional police said on Wednesday.

Two more people were shot dead by unidentified gunmen in a raid on a police station in another Dagestan town, Kaspiysk.

In Kaspiysk, on the Caspian Sea, attackers also killed a police officer on duty Tuesday evening and a local resident after entering a police station and then fleeing by car.

The gunmen had earlier hijacked the car and tied up the driver in the back seat. The vehicle and driver were later found in a different town.

The violence comes just two days after Putin triumphed in the Russian presidential polls, with official results in the Russian Caucasus showing support of over 90 percent.