Six Russian youths attacked two members of the Russian punk group Pussy Riot with pepper spray and ecological paint.
Maria Aliokhina and Nadezhda Tolokonnikova suffered some light chemical burns.
The two women were in the city of Nizhni Novgorod, east of Moscow, where they were supposed to visit a prison.
According to Piotr Verzilov - husband of Ms. Tolokonnikova - an organized group entered to a McDonalds where the members of Pussy Riot were eating and attacked them.
The youth were using patriotic symbols and chanting nationalist slogans. The police have opened an inquiry to investigate the case.