Policemen killed in Caucasian shooting
One policeman died in an ambush and several people are reported to have been injured.
Another attack took place on the Kavkaz federal highway. Unidentified gunmen opened fire at a car in which two policemen were travelling from the Russian city of Rostov to Ingushetia. One of the men died, whilst the other was taken to hospital.
Earlier on Tuesday, another policeman was shot dead in his car by unknown gunmen.