Russian prosecutors say an anti-hate crimes campaigner has been shot and killed in Moscow.

The Prosecutor General's Investigative Committee says the man killed Monday was an active campaigner against neo-Nazi groups.

It said in a statement Tuesday that investigators are looking into the victim's activities as a possible motive behind the killing.

It said the 26-year old man was killed in the entrance of his apartment building with a shot to the head. RIA Novosti news agency identified the victim as Ivan Khutorskoi.

Russia has seen a string of contract-style killings of human rights activists and journalists.

Few of the killers are ever found or prosecuted.