A criminal case has been opened against a 23-year-old woman who was photographed with a naked sex doll at a war memorial on Victory Day in Stavropol, the city's branch of the Interior Ministry said.
A 22-year-old man is also being held in connection with the case, Rossiiskaya Gazeta reported.
Anastasia Polnikova and Nikita Fili are said to have arranged the photo shoot on May 9 at the T-34 tank memorial, which is one of the most popular sites in the city.
The pair, who were with friends, also took photos of themselves posing in bathrobes, drinking alcohol and smoking by the memorial. The pictures were later uploaded to a popular social networking site.
Originally only Polnikova and Fili were arrested and charged with hooliganism, after which Fili was expelled from North Caucasus Federal University.
Police now say they have established the identities of all the key offenders in the case, who are to be charged with desecration of the dead and their burial places.