A 20-year-old porn star, Rita Fox, said she has been detained for two weeks after she posted pictures of her butt in front of the famous Moscow monument last week Saturday.

The picture shows the actor simulating a sex act while wearing a police jacket.

Information has it that she is the fourth person to be held for doing so in recent times.

She said that she posted a picture of her naked buttocks against the background of the Kremlin on the edge of Red Square in Moscow which elicited complaints.