A woman dressed in black shouting, ““Allahu Akbar,” and, “I am a terrorist,” while carrying the decapitated head of a child has been arrested at a subway stop in Moscow, reports say.

A report from Russia Today said the woman was seen the near the Oktyabrskoe Pole metro station in northwest Moscow. Her appearance followed the discovery of the decapitated body of a 3-year-old or 4-year-old child at a burned apartment in the capital,the International Business Times reported. The woman, reported to be the child’s nanny, was detained after holding the head in the air and shouting.

Russia Today reported that authorities said the woman was in her 30s and from “a central Asian country.”