Olga Kiry, a reporter from Russia's Channel One television, was beaten up when she went to a hospital to try to talk to people injured on 2 February in blasts in casinos in the regional capital, Vladikavkaz. The blasts killed two people and injured at least 20 others.
Prosecutors have opened a criminal investigation against one of the officers, who is accused of abuse of office and preventing the journalist from carrying out her work. The three officers were reportedly detained on 6 February.
Russian media reports said North Ossetia Deputy Interior Minister Soslan Sikoyev called Kiry to apologize for the officers' actions.