DUSHANBE, February 29, 2016, Asia-Plus -- Russian authorities detained a nanny dressed in conservative Islamic dress on Monday after she waved the severed head of a child that was in her care outside a Moscow metro station, according to law enforcement sources cited by Russian media outlets.

The niqab-clad woman is shown holding the child’s head aloft near the Oktyabrskoye Pole (October Field) metro station in northwest Moscow, according to graphic video footage, released by news organization Life News.  In the footage, she shouts: “I am a terrorist.”  The woman could be heard shouting “Allahu Akbar” as she waved the child’s head.

The woman also threatened to blow herself up, RIA Novosti reported, but there has been no indication that she had an explosive device on her person.

Police reportedly identified the woman as a native of Uzbekistan named Gulchehra Boboqulova.  They said she was being sent for psychiatric examination.

That child’s decapitated body was reportedly discovered earlier on February 29 by firefighters who were dispatched to extinguish a blaze at the child’s Moscow apartment.

Moscow’s Investigative Committee said in a statement: "According to preliminary information, the child''s nanny, a citizen of one of the Central Asian states born in 1977, waited for the parents and elder child to leave the apartment and then, for reasons not established, murdered the infant, set fire to the flat and left the scene.”

It is currently unclear whether the incident is related to extremist motives or if the perpetrator suffers from a mental illness.